FitPub is described as 'Self-hosted fitness tracking platform for the Fediverse. It lets people upload workout files, review their activities with maps and metrics, and share them through ActivityPub instead of locking them into a closed social network' and is a Run Tracker in the sport & health category. There are seven alternatives to FitPub, not only websites but also apps for a variety of platforms, including Android, iPhone, Apple Watch and Android Wear apps. The best FitPub alternative is Runbuds, which is free. Other great sites and apps similar to FitPub are FitoTrack, Strava, Nike Run Club and Endurain.