[notatoad]

Does strava actually use the trail data from OSM? as far as i can tell, the routes on strava are entirely contributed by strava users and don't come from OSM in any way.

The two maps follow the same paths obviously, but at least in my region the routes and segments on strava don't ever seem to start or stop at the trail intersections in the OSM maps and often cross unmapped and unofficial connectors that don't appear on OSM. The extent of their reliance on OSM trail data seems to be that they use MapBox tile images and those tiles sometimes have OSM trail names marked on them.

[mtmail]

Strava's map are based on OpenStreetMap, there is attribution in the bottom right corner of every map (not sure where in the mobile app, I'm not an active user).

The parent comment probably talks about giving Strava user uploaded data/tracks back to the OSM community so they improve the map (or add new paths themselves). In a way they already do https://wiki.openstreetmap.org/wiki/Strava#Data_Permission_-... Allowing tracing is more than other companies offer and gladly accepted. It regularly leads to new unmapped paths discovered, sometimes on private ground (military areas) that are otherwise inaccessable to an OSM mapper.

[notatoad]

>Strava's map are based on OpenStreetMap

yeah, that's what i was saying about the tiles - their tiles come from mapbox, which means they include OSM data and therefore must include the attribution. but the claim was that they're heavily reliant on OSM's trail data, and I just haven't seen any evidence of that.