I got 2 GPX-files from a race (go and return). I got both files merged into 1 file. When I import the files (the file I got and the one I made) I can see the route in both cases. But in both cases the route can't be saved. The sizes of the files are 0,3 MB and 0,6 MB. I also imported a file from an activity (nothing to do with the race) from someone on Strava and that file is 1,8 MB and that route can be saved without any problem. So the size is not the problem. Anyone an idea what could be wrong.
The GPX from the race can be found at http://ultrardeche.fr/parcours-100-miles/