Garmin 800 - routes are truncated

[chocjohn9]

I have noticed recently that my Garmin 800 is trancating routes when I upload them from various sites (mainly cycle.travel - which is more than wonderful, BTW). It didn't used to....
It's a few years old, I'm updated the software when I've been asked to and I've just bought a large 64 SD card. At the weekend, I loaded a 200kms ride and it shortened it There were only two other routes visible on the screen. I'm wondering if I'm deleting routes but in reality and somewhere invisibly, it's storing them, and is now cluttered with old rides? ggrrhh
I need it to work and for it to accept a long route and for it to work perfectly. I'm doing LEL....
Any thoughts?
Thanks

[meic]

CycleTravel can throw up routes with incredibly high numbers of trackpoints. Have you just reached the Garmin's trackpoint or routepoint limit.
Either per route or total number of waypoints in the unit.

This was easily done on the old Etrex's with their 500 point limit on tracks and it would truncate the tracks as you describe. Possibly your route has reached the 10,000 or other limit.

[bohrsatom]

As Meic said it could be the trackpoint limit. Download GPSBabel (https://www.gpsbabel.org/download.html) and simplify the route to a smaller number of points

[chocjohn9]

Great. Thanks to both of you for your help.

[Richard Fairhurst]

Happy to have a look at building something like that into cycle.travel - if you let me know an example of a problematic route and where (roughly) it got truncated, I'll look at adding an auto-simplify option!

[bohrsatom]

Happy to have a look at building something like that into cycle.travel - if you let me know an example of a problematic route and where (roughly) it got truncated, I'll look at adding an auto-simplify option!

If you do add this feature, it would be great to be able to split the GPX into multiple smaller pieces before being simplified. This would save me so much time when planning longer routes where I am having to split and simplify using other tools.

[chocjohn9]

Richard - the route is called "Tervuren(Rand.be)Sept17" and it truncated at about 140kms.
There's a good chance that it was my Garmin though. I had a play with it (I'm not really into IT) and there was a load of history in there that I think might have been clogging it all up.

Thanks for setting up the site and for keeping it running. it's my go-to place for routes

[Richard Fairhurst]

Ok - I've put in a little simplify step (for GPX tracks only, not for TCXs) that trims the number of trackpoints down by 75% or so, except on the shortest tracks which it leaves as is. Hopefully this should help, but do yell if not!

@bohrsatom: I've got on the to-do list the ability to mark a via-point as a 'split point', for when you're planning multi-day tours and so on. That would mean (in theory) that we could then automatically split the GPX at these points, too. Probably won't be something I'll get round to in the next few weeks but I'd very much like to do it.