On top of the racing updates that will be coming in 3.20, the community has created a series of race tracks in the PU. XGR made some really cool interactive maps of them in 3D and posted them on SketchFab!
Some of these are official tracks in the PU, while others are XGRs competition tracks:
The Snake Pit - PU Track
Yadar Valley - PU Track
The Icebreaker - PU Track
Beautiful Glen Circuit - XGR Track
Baijini Blitz - XGR Track
This comes from a reddit post by MrBlackMaze:
https://www.reddit.com/r/starcitizen/comments/15x2s14/interactive_race_track_guides/