cyclosm-cartocss-style VS OpenArdenneMap

This is a great map resource I use a lot to set my routes: https://www.cyclosm.org/

Komoot uses OpenStreetMap data. That is a huge plus in the many countries where their data is much better than the likes of Google, but if youbhappen to be somewhere the data isn't great, then you can get results like that. The good thing is though, that if a path is illegal to cycle on, all it takes is making an account and adding bicycle=no to the path. Your edit is applied immediately (though might be reviewed by a human later) and will result in better data in Komoot but also in other apps like Strava or cool cycle infrastructure maps like www.cyclosm.org

I'm new to OSM. I'm looking for a 'trailforks-like' experience where I can click on a mountain bike route to highligh the route, and see information about elevation gains, etc. When using osm.org, cyclosm.org, or OsmAnd on my phone, I can see mountain biking routes in my area, but I can't select them to show me the full named route.

www.cyclosm.org <- good for finding the cycle paths

Ditch Google Maps and use either https://www.cyclosm.org or brouter.de/ (for planning). They are based on openstreetmap data, and are WAY better than Google Maps for cycling, because all the data is crowdsourced and fresh by several years over Gmaps.

There are lots of great maps out there that do show other infrastructure like on-road bike lanes, mixed traffic lanes and signposted cycle routes without any accompanying infrastructure: - CyclOSM - OpenCycleMap - Google Maps

Not to discourage you (I'm a great fan of playing around with things to learn myself), but you should be aware of www.cyclosm.org

The article is not very technical and does not give all the details. The map is made with Mapnik and cartoCSS with the OpenArdenneMap style. See here about OpenArdenneMap and how to use a map style defined with cartoCSS with Mapnik.