Riverside Circuit is a fast paced custom track made by Ptpix1. The model was originally created by Putinas, but Ptpix1 decided to modify and add to it (much like with his previous track, "Piranha Plant Plains"). He decided to do this because he thought the model had potential, but was a bit too simple. Putinas' original model can be seen here. The track includes many grass cuts and a jump across a broken wooden bridge.