Work in Progress mega track
Here is the track so far: (Will be much longer its still in progress) 
bro, good luck. make single turns that start at the world edge then cover the entirety of the ground, then at the end, go up one level and do it again. make it not shoutcuttable, and you have the world's longest track. I've started and I'm nearly halfway through the first layer (I think I can't tell)