@humanetech @dajb @potato_lisper actually there is a fork of #OpenTracks (incl. webpage) with social features.
I guess it is used by a small cycling group in the Czech Repulic.
But the code was never released.
Responsible person: https://github.com/vsevjednom-cz
Some hints for the code https://github.com/OpenTracksApp/OpenTracks/issues/1079
https://github.com/OpenTracksApp/OpenTracks/discussions/1308