Is it feasible for something like this to have heatmaps?

Maybe the data could be shared/distributed via hypercore or similar.

I find heatmaps are my primary way of finding new mountain biking trails and routes.

Don't think anyone other than Strava and Komoot have sufficient user-generated trail database to be useful for your use-case.

	▲	radec 10 minutes ago \| parent [-]
		That's possible. I use RideWithGPS, maybe a lot of people use it around here. Or maybe only two other people have ridden the route, it doesn't say, but it's still super useful for finding routes.