Donut Mountain is the second course in the Mushroom Cup in Mario Kart: Ultra Prix. Racers will start on a dirt road which goes around a tall mountain. Nearing the end of the course, the racers will drive on a bridge over a rushing river. Piranha Plants line the sides of the track in some areas, causing karts that collide with them to spin out. There is a shortcut that can only be properly used with a mushroom, which allows you to drive on a raised stretch of land, bypassing a short amount of track.