How to save data related to two models
save each object into an individual table in a relational database like MySQL
link them using the user ID as a foreign key.
I'm learning Django and have I problem, I don't even know what I should search for to solve it. So maybe someone knows what I need.
So far I have two models in my project

CustomUserModel with additional data

RunningTrackModel which provides information about tracks like distance, location, etc.


My goal is now to save user specific Data for each object of the RunnningTrackModel like time, date, etc.
Whenever a new RunningTrackObject is created, all users should get the possibility to sign up and save data to tracks they signed up for, but whats the right way to implement this?