Routing for MTB

[waldi1992]

Hello, i prefer to avoid larger streets with my mtb.
But opentopomap does some strange routing therefore.
https://forum.openstreetmap.org/viewtopic.php?pid=828781#p828781

Or is there any trick for setup the routing on my gpsmap 66

i like the typ-file, so i want to use OpenTopoMap instead of OpenMTBmap

gerne auch eine Antwort in deutscher Sprache ;-) Danke