https://maps.openrouteservice.org/directions?n1=46.172461&n2=6.331043&n3=12&a=46.212649,6.141881,46.170815,6.478592,46.188298,6.521845&b=1a&c=0&k1=en-US&k2=km
ors-export-linestring.gpx
Voir aussi: https://radeff.red/ravieres/le-chalet/aller-aux-ravieres-velo