It is a datapack with gates in different types pointing into different directions, as used in my „CeBit“-Map ( www.youtube.com/watch?v=C4AEVwEOovs )

+ a small script that you can mark paths with: It calculates setblock commands for all waymarkers on the way from A to B (tutorial: www.youtube.com/watch?v=410aP54isow )

+ Redstone timekeeping logic (The gates got commandblocks in the floor to detect you flying through - code integrated but you have to adapt some number values to assign them) Youtube Demo of the Redstone-Race-Mechanics: youtu.be/wky3SkK7kfA?si=Ct8eORdN4cQ08T9D
it also works Offline local LANmultiplayer and in Singleplayer
Tutorial in readme.txt

I tested it in MULTIPLAYER now again (in LAN we were 2 Players) after some adaptions. It worked. The gates can now distinguish who flys through them and count Laps separately. Time is counted over all Laps and who does most Laps in a given time, wins. the momentary timecount (since starting the race) is put out via chat and thus you can also read them in the Logfiles afterwards (e.g. "Player X reached lap 5 at 6min51sec").
There is a function called namespace:resetrace that sets the counters back to 0.