blend file to in game track (help)

[Milkywaes55]

can someone help me make a track or convert the blend file to a track?

the track is called yatabe I it would be pretty cool to have a track like this in game

https://drive.google.com/file/d/1lzbuY6LGX3V8I_zEb0Y3cRBtiOHyJ7jQ/view?usp=sharing

I add a top-down view photo, the track is fully detailed and added scenery