Check out this tough track featuring "triangular tunnels" in the sky, as well as a dynamic start and/or PF.
Here's an island track from 3rS4Tz. It's for wallriders and loops' drunkards. If you like those kinds of run, why don't you try it... Jumps and speed are at the Rendez-Vous.
Another track from PapyChampy in an airport style, a little bit like my Airport race track. But this time you will spend more time in the air.
Here's an island by night. Formerly building to run several laps, after all it's one lap. The start is the finish and the middle section. From 3rS4Tz.