Hi,

You are right about  osm.org/way/698922430, that is a track! I reversed it back into a track.

Als for the 
 osm.org/way/698922430
osm.org/way/1234133593, they are ski pistes that are in summer also possible to be walked upon, so I added highway=path. They are wide enough for a tractor, but not prepared for that, and also not prepared for MTB or (normal) cycles, as they are quite steep, but any MTB cyclist could do this route.

For the mountain bike routes here (see https://lequeyras.com/app/uploads/guillestrois-queyras/2025/07/Depliant-bike-park-2025-VF.pdf) , it's a bit complex, there is the "Bike Park" with the four routes, I tried to put them on the map, but I don't know the exact trajectory of the black D4.
Then there is also the bigger VTT de Montagne routes 51-55 (see page 2) but I didn't put those in yet.

Greetings, IIVQ