The Nadeo Canyon campaign track, inverted.
You can also download the full inverted campaign with the Canyon Inverted titlepack, complete with 260 medals, available in the Nadeo store in-game.
Direct Canyon Inverted titlepack download.
To install, place it in the Documents/Maniaplanet/Packs folder. While in game, select an available station and then load a title, select "from disk", and finally select Canyon Inverted. The download is roughly 32 Mb.