[xsmasher]

Strava has:

  * the database of "segments" created by users  
  * the leaderboard data for each segment  
  * the network-effects of being "the place to record data"

If you create a self-hosted Strava then it isn't really Strava; it's just a log of your workouts.

[johannes1234321]

Also the heatmqps to do routing based on where people actually are riding. Which is useful to identify the good/secure roads.

But a self hosted tool still can do a lot for own analysis. For tracking the own progress, the own training plan.