Self-hosted running software

I have recently started running as a means to get rid of excess energy and keep myself fit. My first finish line is 5km away and the goal is to arrive there in 30 minutes.

In order to cross this line I have decided to employ some privacy friendly and self-hosted tools such as C2K for guidance during runs and OpenTracks to record my runs.

So my question to all self-hosters and runners:

1. What are some privacy friendly, self-hosted solutions that I can add to my current stack to visualize and keep track of my runs?
2. What are some other helpful tools that you guys use for running?