Nuvi 7xx Routes?

Any waypoints that you use will be downloaded on the 7xx and used. Garmin said the maps were the same and the routing is the same.

I saw the MapSource option to say avoid a specific route and I'll be watching to see how that would download since the 7xx does not have that feature.

But I'll say this. MapSource seems to have all encompassing features for all units and cannot be customized for a particular unit. A somewhat unfriendly design.

The avoidances and routing preferences are not sent to the unit from MapSource. However, many users here have reported that the 7xx series has faithfully preserved their desired route.

The best thing to do is to plan your route in MapSource and then send it to the unit and carefully compare the two. If there are differences, then you just need to add a few more via points to the areas where the unit is making changes.

After a shaky start, I seem to have got the results I was hoping for. What seems to happen, is that the .gpx file that is downloaded, contains the route as computed by Mapsource. In other words, unless you specifically ask the Nüvi to recalculate the route, it will follow the minute detail defined in the .gpx file as <rpt> entries (each of which is a longitude, latitude pair). Obviously, for this to work, the same map data has to be in use on the PC and Nüvi.

So when you define avoidances on the PC, you're affecting the decisions Mapsource makes in computing this route - you're not downloading 'preferences' to the Nüvi, for it to compute a route. If you subsequently try to amend it on the unit itself, you'll get a major re-calculation and the result will suddenly bear no resemblance to its former self - at that point it would just apply the simple preferences (shortest distance, avoid highways etc) that the unit has.

See these examples:
http://geepeeex.googlepages.com/Mapsource_Route.JPG
http://geepeeex.googlepages.com/Nuvi_route.JPG

This route was created using 'avoidances' (the shaded areas). It only contains two actually Waypoints - the Start and the End. But while ever it is unedited on the Nüvi, the minute detail produced by the convoluted avoidances is preserved.

I've definitely had more success using 'avoidances', than making Waypoints and forcing them to be part of the route. A major downside of waypoints, is that they all get 'announced' and are quite confusing ("Arriving at WPT0356 on right" - um...am I really?!?)

They are both good units. If you are not interested in Bluetooth, save some money and get the 750. You can always buy the MSN Direct.

I have the 760 before the 780 came out, then bought the MSN Direct. I have really enjoyed my unit

Ok, I am a bit confused. I thought that mapsource would do what google maps does and calculates a route then you can drag the route around to however you want it to be. Then you could send that route to the 7xx GPSr and have it that way on the unit and it would follow that route no matter what.

In other words, lets say that I plan a route and it takes me on the highway (which is normally how I would want to go). However, in this instance, I want all back roads so I can tour the countryside for the heck of it. So I drag the route around until I get it the way I want. Then I download it to the unit. I thought it would follow that route even if I had my avoidances to avoid backroads and I had the faster route option selected. Is this not true?

ASIANFIRE

You are correct you can build the route anyway you want in MapSource and it will remain the same on the Nuvi7xx.
The only time it will recalculate the route is if you modify it on the Nuvi7xx, after you have loaded into your Nuvi7xx.

Yes, MapSource allows you to plan a exact route. However, when you send the route to the unit, for the most part only the viapoints are sent and not the routing algorithm. And avoidances and routing preferences are absolutely NOT sent to the unit. The unit uses its own settings on the route.

Often the route will be completely faithfully replicated. Sometimes it will not. When this occurs, the solution is to add more via points to force the unit to take the path you intended.

Oh ok, that is good to know.

Ok, this is the part thaht I don't get. Why spend all this time on the computer to get a route EXACTLY the way you want it, and then it doesn't work exactly the same on the GPSr. I guess my point is, is that you should be able to create a route and have the GPSr follow it to a tee without any mods and without adhering to its own perferences. To me, the only time it should change is if you get off the route and it needs to recalcuate. Even then, it should try to re-calculate it back to the original route that you were on, even if it isn't the fastest, etc.

There's a bit of learning curve involved, in understanding how to plot a route with Mapsource in the first place (and I don't think for one minute I've mastered it yet). I've not found any way of 'dragging the route' as such. If you use the Route tool, or define Waypoints and add them to the route, the result is a route full of Waypoints, that the Nüvi thinks are significant (ie they're announced as you arrive at them). Personally, I don't like that effect - so I've been defining 'Avoidances', then hitting "recalculate route", to 'push' the route where I want it. The avoidances themselves aren't recorded in the gpx file, just the result of them being present.

There's clearly more than one way of doing this...

So I think the answer to your question is: the Nüvi will follow the downloaded route (if it can), unless you 'mess' with it after downloading.

Of course, the detail within a route can vary wildly. It seems they can just define a few major (via)points that you want to travel through. Presumably the Nüvi knows that it will have to fill in the details itself.

I come from a geocaching background so I've always planned routes with that in mind. When I travel I make my route in Map Source using waypoints. I select various towns along the route and make them waypoints so that, when the route is calculated, it's forced to go the way I want to go. On a typical trip from California to Montana I may end up with 6 - 10 towns along the way set as waypoints so that the route HAS to go the way we want to go. My wife likes to take different routes so that we see different parts of the various states we travel through.

I don't really find this to be all that difficult to do and it lets me make any customized route I want. I'm still waiting for my Nuvi to arrive but I would guess that, using the same method I've always used for routing, the Nuvi will be routing me the way I want since I've set specific towns to travel through.

Ok, I am going to have to get a copy of mapsource.

One last time for dunce here...so mapsource calculats a route, but you can't drag the route to make it different, right?

It is based on the way points that you insert, right?

In google maps, you can drag the route from one point to another and it recalculates the route. In esence, I guess it is going from point to point to point.

If you have either an MSN or a GTM receiver will the traffic avoidance override a custom route?

That's a good question!

I think there's maybe some different usages and expectations here. For a route like that, where the route between the points is not that important, and being told you've arrived in the town could be considered a good thing, then I'd agree - add the waypoints to the route and hit "go!". The Nüvi itself is quite capable of doing that itself. Also, you could argue, that you could achieve the same effect, just using Favourites on a non-routing Nüvi.

I've been trying to use the Route planning (so far), to define exact roads I want to travel on, as in this example:
http://geepeeex.googlepages.com/pennines.jpg

in which case, adding zillions of waypoints to every nook and cranny wouldn't be appropriate.

You certainly don't get an easy to use 'drag' function such as Google maps has, but there may be other ways of fine tuning the route that I've not discovered yet.

I just started playing with Mapsource this weekend so I am not an expert but you can change a route in Mapsource by "dragging" it. It is just not as intuitive as Google maps.

The key to getting it to work after the initial route is created is to click on the selection tool (the arrow), then click somewhere along the route you want to change. You may have to click the route twice for the rubber-band lines to appear. Move off the route and a "rubber-band" should follow your pointer. Move to a spot on the desired route and click again. Your route will be recalculated using the new route.

Hope that helps.

ASIANFIRE

Yes you can do anything to build a route in MapSource.
Once it is built then you can click and drag it if you want. You them can add WayPoints to the map and then click and drag to the new waypoint. If you just click and drag the point you drag to becomes a VIA.

Now if you save the route and download it to rour Nuvi7xx it will retain EVERYTHING exactly as you built it in MapSource.

When you SEND TO DEVICE in Mapsource and select only Routes and not WayPoints the WayPoints you used to defone the route will not be transfered but they will become VIAs instead and not announced.

The only time it will recalculate on the Nuvi750 is if you try to add a Via, WayPoint or a New Start Point or End Point to it (Doing it on the Nuvi).

Also if you change routing preferences on you Nuve after you have imported the downloaded route to your working ROUTES directory the route will recalculate to whatever (such as a faster route) etc.

If this happens and you did not want any changes you can delete the route from the working Routes directory and re-import the downloaded route again thus preserving the original routing.

That is great to know, thanks. I am sure that it will make much more sense when I get mapsource.

Phil, there is a tool available to suppress all those unwanted viapoint flags.

Here's the link to it on the Zumo forums. (You might have to register to view it.)

http://www.zumoforums.com/index.php?topic=2966.0

Charley, it's important to understand that for most units, only the viapoint information is sent to the unit. This may be enough to get the route to go where you want, but it might not be. So sometimes, you have to add extra points.

Here's how it use MapSource to build my routes.

I use the Routing tool to place the start point. Then I continue with the routing tool placing points where I want the route to go. I don't pay too much attention at this point where the route exactly goes as long as it is close.

Once I'm done, then I switch to the pointer tool. If you single click on the route with the pointer, it will change from magenta to yellow with red arrows. Then single click again on the route near where you want to make a change. This will "rubber band" the route at that point.

Then drag the route to where you want it to go and single click again. Allow MapSource to recalculate the route and repeat as needed.

Thanks a lot!

Excellent - that looks like it addresses my issues.

Thanks, Phil. This is what I surmised would be the case, since the on-board editor in the Nuvi would not have all the same options that are in MapSource.

This is a pretty acceptable utilization, provided that if you were to do something like add a waypoint on the fly - like a restaurant for lunch - which would probably trigger a recalculation of the route. I would hope that after leaving the restaurant, you could just load the route and continue as it had been originally downloaded from MapSource. Or does adding a "lunch" waypoint on the fly while enroute cause you to update and re-save the now-altered route?

Sigh........ it's tough waiting for my "car unit" so I can be sure of my answers. However, on my 76CSx I'd probably simply stop routing and tell it to go to the new spot - restaurant, bank, etc. Once I was done with the side trip I'd simply start the route again.

As I said above, I really don't have experience with how the automotive units route so take what I've said with a grain of salt.

Hmmmmm........ never heard of this. Looks like a pretty cool utility for some folks though. Definitely worth a bookmark for me. Thanks.

I've only tried this is in simulation mode, but if you're on a pre-defined route and manually add another via point, the Nüvi 7xx recalculates. (This doesn't affect the stored route, just the one you are now following).

If you've downloaded a massively detailed route from Mapsource and managed to get the Nüvi to leave it intact when 'imported', the result would be a major disappointment - as all the hard work would be undone (because the Nüvi will just apply its simplistic set of rules ie Shortest Distance, Quickest, Avoid unpaved Roads etc).
If, however, your route was a collection of Waypoints that you must go to (and don't really care how you get there, then the net result will probably be fine.)

What I don't know, is what happens if you cancel your route and then try to re-engage it later. It certainly offers to guide you to the beginning of the route (but often that wouldn't be appropriate). If you decline, it seems to expect that you will find the beginnging of the route yourself - it doesn't seem to understande the concept of joining a route part-way through.

This is an interesting discussion and I discovered a "waypoint trick" that I use. In MapSource to change a route I click on a highway Icon like I10 or 101. These Icons have a direction waypoints like I10E or I10W. With these waypoints I do get an "approaching..." message. I drive right through the waypoint and Callie isn't nagging me to take an exit!

Hornby, I would imagine you have the same capability in the UK???

That's her name you know - Callie because she's a brit. Ree is her first name as in Ree Callie.

Always re-calculating you know.

This will probably satisfy most needs, but not mine. This would be fine for business use and casual traveling, where the destination is indeed more important than the journey. But when taking a sightseeing trip, the journey becomes more important than the destinations.

Having used the very feature-rich laptop based system of Delorme Street Atlas, I was hoping to get some of that core functionality in a handheld unit. I had a feeling that I was asking for too much.

On a sightseeing trip last fall, I approximated what I wanted by setting multiple Favorites on my then brand new Nuvi 350 and named them as "1-This City", "2-That City", "3-Hotel Name", "4-Apple Orchard", "5-Scenic Road", etc. Really wasn't that big of a deal to select them one at a time. If I would still end up with a collection of waypoints and if the routing that was set up in MapSource may not necessarily be followed by the Nuvi, I may just forego an upgrade and spend $100 for the latest Delorme SA instead.

On a detailed sightseeing trip, I would always have my copilot along to run the laptop and to provide the "mount" to hold it.

If the above is true I would think that upgrading to a Nuvi7xx or Nuvi8xx would be in you best interest.

Using one of the above NUVIs and MapSource you could make a custom route to suit your needs. You could build a route with every twist and turn you wanted (back roads, side roads, etc)and the down load it into the Nuvi and the Nuvi would retain the whole route. Thus making your trip the way you want and not the way the GPS wants.

Thats is the reason I bought a Nuvi750. I got used to routing this way on my Ique3600. I tried to find the most interesting routes for all my trips and using MapSource along with my Nuvi750 and Ique3600 it worked out just as I wanted.

Also the Nuvi7xx has tracks. so when you return from a trip you can download the tracks into MapSource and eithe view the track in MapSource or on GOOGLE Earth (The Google Earth option is available in MapSource)

Garmin told me that the maps and routing are the same and I have not seen any difference to date. Clearly they need to be the same version of the maps and the same options.

One of the reasons that I bought the 750 is because it supports routes. And to my suprise I can download any number of routes to my 750. On the unit only 10 can be imported at one time, but I can delete some and import others w/o a computer connection.

Based on my usage so far, MapSource routes transferred to my Nuvi 750 and imported have remained the same (even if the original MapSource routes were created with avoid areas). BUT these routes MAY change if they are RECALCULATED on the Nuvi. Since the Nuvi does not recognize avoid areas on recalculate any routes using these may change significantly. Even routes created in MapSource using only waypoints may change on recalculate. The recalculated routes will honor all the waypoints, but the routes between these points may change. However, the good news is that I have encountered this (or at least noticed, since I may have missed some instances) only a few times so far (out of a 100 or so preplanned routes) and I was able to "fix" by adding one or more additional waypoints to the original route in MapSource. Since a routing change on recalculate may occur between the last two waypoints on a longer route (although it could occur anywhere on the route), if actively navigating, one may not be aware of the new routing until it's too late to adjust. A recalculated route will most likely still get one to their destinations (waypoints) reasonably efficiently. The changed routing will just not be exactly as originally planned in MapSource. But this could be an issue if one prefers one specific routing over another (e.g. to avoid areas, for sight seeing, shorter distance but longer time route just for that segment etc etc).

So is the solution simply to not recalculate any MapSource routes transferred to the Nuvi? Maybe, but what if, while navigating, one deviates from a planned route for any reason (to find a gas station, having made a “wrong” turn etc) and the Nuvi automatically recalculates. I haven't actually noticed any problems with this yet in navigating (and as above, one might not notice if a change was downstream and/or quite minor. Routes created in MapSource with large avoid areas would be an exception I’m sure), but I fully suspect that the route would then be subject to the same potential changes as noted above. However, any recalculation changes would occur only to the "current route" and, although a bit inconvenient perhaps, one could recover by canceling the current route and reloading the original route (one can join a preplanned route part way through and the Nuvi will pick up from there). I wonder if there is an option to turn off automatic route recalculation in the diagnostic area? I think I've read that other GPS's may have this option.

A previous post indicated that rejoining a route in the middle was difficult, and made it sound like the Nuvi would want you to start over from the beginning.

Can you in fact exit your route somewhere in the middle for a restaurant or gas station, and then reload/restart the route and join the route from where you are?

You should be able to. I think my 760 did it, but it was a while back. I was headed to OKC, stopped off to get gas and food, then went back. Of course, when I turned off, it kept saying "Recalculating" like you would expect it to. When I left the restaurant, it recalculated and I was on my way.

I don't think I had to go to my "Recently Found" icon to punch in the info again.

[quote=johnc ......Can you in fact exit your route somewhere in the middle for a restaurant or gas station, and then reload/restart the route and join the route from where you are?

IF the route didn't want to pick up from where you left off, couldn't you simply display your current route, delete the waypoints you've already passed, and then have the route pick up from your current spot?

When you join a route mid-way the Nuvi knows which way to go and ignores all points you have already passed.

Of course, you could amend the original route before reloading it (but not the "current" route [as the Nuvi defines] since the points you already have passed will not show up there) but there is no need to. Note that if you do amend a route, the Nuvi will recalculate so one should heed the caution if one is dealing with a route transferred from MapSource.

Going off route with the unit active is no problem as it tracks and recalculates where you are.

The problem occurs when the unit is turned off and even then rejoining a route is no problem once you get back to the route.

But Garmin doesn't help you get back to the route. For longer distances the route may not even be visible, but you can zoom out and lose the detail. There are manual solutions such as route modification, selecting a route waypoint to go to and once there restarting the route, etc. But there is no Garmin route help except to take you back to the beginning of the route.

If you deviate from a route and reload the original route with the view of returning to it (whether the Nuvi has been turned off for a period of time or not), the original route from start to end (including all the waypoints you have already passed) will show on the map. As before and as below, if you are not on the route itself, initially you will not see any magenta line guiding you from your current location back to the highlighted route BUT if you are not quite close to the route (and perhaps also if there are multiple ways to get back to the route) my Nuvi will recalculate and then show you the way back. Essentially your current location now becomes the beginning of the entire route and all waypoints you have not passed yet will be honored. I do find I need to start driving (which way? Usually you would have some idea) to prompt the recalculation in this situation but it does eventually recalculate if I am on a road (if you don't start moving I think it may just sit there and give no guidance back to the original route. I also don't think it will guide if you are off road in a parking lot etc). Further, I notice that if you are quite close to the route you want to join, the Nuvi will not ask you if you want to navigate to the beginning of the route. It just tells you to navigate to the highlighted route, presumably because you can easily see the highlighted route on the screen. My experience anyway. Again this sounds a lot more complicated than it really is. The Nuvi will do most of it for you.

doesn't the routing on the 750/760 work just like it does on the 2720/2730? If so, great, because I use the route creation on Mapsource, download to GPS and store feature a lot. Cannot see myself choosing to not have that feature.

On the nuvi 750 when you restart the route you have to choose from 2 options:
1. Navigate to the beginning of the route and the unit will calculate the route.
2. If you don't choose the above then you are told to proceed to route but there is no routing or help to get there. For short distances you can most likely see and get to the route using the map on the screen. For longer distances the route may not appear on the screen until you get close. Or you can zoom out and lose the detail. None of this is very user friendly in my opinion. If you are in a familiar area then you know where to drive anyway. But in unfamiliar area it may not so obvious.

As I posted above there are ways to work through this but Garmin does not help.

I'm not familiar with the 2720/2730. But putting the above offroute situation aside the units appear similar to the 7xx from what I've read.

For the 7xx you can setup waypoints and routes in MapSouce and download them. Then import them on the 7xx and choose the routes and/or waypoints you want.

On the nuvi 750 when you restart the route you have to choose from 2 options:
1. Navigate to the beginning of the route and the unit will calculate the route.

My 750 does not always give this option, especially when you are very close to the reloaded route (if you are that close to a mid-point on the route it probably can correctly surmise that you won't want to go back to the very beginning). In any case if you wish to join a reloaded route in the middle and you get this message, just answer "NO".

2. If you don't choose the above then you are told to proceed to route but there is no routing or help to get there.

My 750 WILL recalculate if you are not close (but it usually does take a moment after you start driving, which is the only fault I would have with it) and it will then show you the best route from your current position to the next waypoint on the reloaded route.

For short distances you can most likely see and get to the route using the map on the screen.

Yes. And the Nuvi may not always have had time to recalculate (or may not recalculate) if you are close to enough to clearly see the route on the screen.

For longer distances the route may not appear on the screen until you get close.

True, but you still will get a good idea in which direction to start moving. Then the Nuvi will recalculate and show you the way back.

Or you can zoom out and lose the detail. None of this is very user friendly in my opinion. If you are in a familiar area then you know where to drive anyway. But in unfamiliar area it may not so obvious.

Just let it recalculate.

As I posted above there are ways to work through this but Garmin does not help.

No need for “work-throughs”, although they will work. As above, the Nuvi will show you the way back.

CATraveler, since your experience seems to be different than mine, I just experimented with loading a few routes locally to see what happens when I deviated and then reloaded the routes. It works as I have reported and is consistent with our daily use of the unit for several months in unfamiliar areas in Florida last winter. If I have any complaint, it's because the Nuvi waits a bit before recalculating (and one may have traveled a block or two already), but it always recalculated if I didn't get back to the route on my own. I'd just be guessing that the delay in recalculation is to give one some time to find the way back by themselves and for the unit to surmise that one could use some help. Anyway it works.

I set up a route that came within 3+ miles from my house. About 4 blocks from my house the 750 calculated the way to the route. So you are correct.

I stopped at a store and turned the unit off. After the store I selected the route which is now about 3 miles away and headed for the route again. This time the 750 DID NOT calculate the way to the route. So I am correct. I had a green light and drove across the route at 30MPH. When I was on the other side of the intersection the 750 then told me to turn left onto the route and then started recalculating as it recognized it was not on the route.

The route was a short route with 2 waypoints and the entire time the 750 was showing where the car was on the map. It had plenty of time to recalculate on the second test as these were city streets and I stopped at 2 stop lights.

So my conclusion is that something triggers the 750 to calculate the way to a route and sometimes it will and sometimes it doesn't.

So we're both correct and there must be more to this story.

That's interesting. I have noticed that the time to automatically recalculate in these situations varies a lot but I don't know what triggers it. I know the Nuvi won't automatically recalculate unless you start driving, which is a pain. Eventually it has recalculated for me every time, except when I was quite close (much closer than 3 miles) to a route. But I wish it would do so much much sooner than it does. It’s a bit disconcerting to be several blocks along one’s way before it does its thing. I'd just be guessing again but maybe it doesn't do a recalculate if it thinks you are doing a nice job of heading back to the route on your own (a straight line run more or less) but who knows. Now even though it won't recalculate on its own when you initially reload a route and are still stationary, you can take a look at the "current" route and see which of the original waypoints it would include (those upstream) or omit (those downstream) in the new route when and if it recalculates. And you can force a recalculation at that point too (to force you need to recalculate one way e.g. "shorter" then immediately recalculate again the original way e.g. "faster" etc). Although it's a few more buttons to push to get it to manually recalculate, it would then immediately give you a route to guide you from your current position without messing around with setting new waypoints, trying to navigate via a zoomed out screen, showing the blue line track and trying to follow back without on-screen or verbal guidance etc etc. Perhaps the reason for not automatically recalculating until one starts moving is to provide the opportunity to peruse the original route on the screen before it changes.

I set up several local routes for my tests but also reloaded a very distant Florida route (Orlando to Miami to Estero) to see what would happen. In this case it automatically recalculated a route from near my home to Miami then to Estero before I had traveled half a block. It skipped Orlando in the new route and set Miami as the next waypoint since I had indicated that I didn’t want to navigate to the beginning of the route i.e. Orlando. In contrast, in another test on a local route, it made me drive around for what seemed far too long on several streets in a residential area before it would recalculate. But for most of my tests (some reloaded routes with multiple waypoints upstream and down from the point I wanted to join mid-stream), the Nuvi recalculated after I had driven a few hundred feet.

We got into all this because MapSource created routes may get changed (sometimes well downstream and not readily apparent, but still most likely quite reasonable as far as routing goes unless avoid areas are involved) by the Nuvi on recalculates. So if it’s important to follow a route EXACTLY as created in MapSource, one should reload it after the Nuvi automatically recalculates upon route departures. The automatic recalculations that may take place when returning to the original route constitute a mixed blessing. It’s great to get guided back when in unfamiliar territory (would be better if the recalculations would come much quicker) but, when the MapSource issue applies, the occurrence of any such recalculations would require a second reloading of the original route once this original route is rejoined. A switch to turn on/off automatic recalculates might be useful. But speeding up automatic recalculations (with them always being triggered) for the purpose of navigating back to reloaded routes would be much more useful in my view.

I agree, as I left home (and at that point there was plenty of time to calculate the way to the route) it was 4 blocks before it did the calculation. In an unknown area which way do I drive?

And the second time if failed completely. So from this and my prior experience which prompted my original post I want to conclude that I cannot depend on the 750 to ever get me to the route. If it does at some point then great but in the meantime in a unknown area I'm on my own. Well GPS is just a guide and help.

I can't help but wonder if this is at all related to my experience with alerts. I've observed inconsistent behavior with regard to video, audio and distance alerts.

My suspicion as a former firmware programmer is that the real time processing gives priority to route processing. Buy why on my second leg on city streets with stoplights couldn't it calculate the way to get to the route? Have questions but no answers.

I found this topic thru a search.

I have a nuvi 780 and am trying to create a route in MapSource and then save this route to my unit. Creating the route went fine, but when I try and transfer the route to my unit, only the waypoints get moved. I'm using the Transfer - Send To Device option in MapSource and tried sending both waypoints & routes and routes only. It says it sends them successfully but all I ever see on my unit are the waypoints.

Where exactly on the unit are the routes saved? I found a small file named Temp.gpx in the GPX folder along with the Current.gpx (my Track Logs). Is this the route? Any ideas on what I may be doing wrong?

Just wondering about something... This particular route is across the country. Is it possible that the route isn't displaying because I'm too far away right now?

EDIT:

Never mind. Found the answer from Durango in a different topic.

That worked. Thank you!

I download about 25 routes on my 750. I can then import the ones I want without reconnecting to the computer. Once I reach the limit of 10 just delete one and import a different one.

So depending upon your view point the 7xx is/is not limited to 10 routes.

Routes that were loaded using MapSource and reside at:

Tools >> My Data >> Import Route from File

Then imported and used can be erased at

Where To >> Routes >> Route(Name0 >> Edit >> Delete

But will still remain at:

Tools >> My Data >> Import Route from File

So when you are through with a downloaded route and then delete it to make room for another downloaded route it can still be re-imported for use again at:

Tools >> My Data Import Route from File

You can import and then delete and re-import routes at you will. Without having to re-download them from MapSource

The downloaded routes - where do they go on the Nuvi, waiting to be imported? I made several versions while learning how it works and I'd like to get rid of the experimental ones. I can't seem to find where they actually are on the Nuvi.

Mapsource just overwrites \Garmin\GPX\TEMP.GPX, when you download them to the unit.
When you do the "Import from file" step, it seems to do a 'scan' for .gpx files and then offers you a 'merged' list of their contents to choose from. I reckon it finds its own CURRENT.GPX during this scan.

(The currently imported "10" are written out to \Garmin\GPX\Current.gpx @ boot time - along with the Track logs and Favourites.

Things are easier to understand, if you do a "Save As..." in Mapsource, rather than a transfer ... and save one route per .gpx file, directly on the unit.

I had a feeling it was doing something similar to POILoader. Older experimental routes disappeared when I downloaded new ones. Well, some did and some didn't. And I did notice a temp.gpx in there. Would not have thought of the Save As option. Worked like a charm. the 760 has some files that the 350 did not. I was reluctant to delete or alter what I was not sure of....
Thanks Phil!

One of my routes with multiple via points does not seem to work as I would like it to. While following it, the magenta line is just connect the dots straight line, not following the roads. Also, in the lower right hand corner an arrow shows up, I guess directing me to the next via point. I have tried remaking this route a couple of times. How is the 760 supposed to function while following routes - all of my routes have been made on the GPS unit, I am using multiple via points to control the roads used - side roads with out traffic lights.