I use OpenTracks for my cycling and running. You can get it from fdroid .

edit: you need a separate app called OSM Dashboard for OpenTracks to visualise your route on a map

I heard of a project ages ago that was stalled. I'd like to help dev one. It'd be interesting work

I don't think there are any with segment options.

Fitotrack also does splits and things.

Segments require harvested user data which most open source apps are against.

Strava is as much of a social network now as a running app.