Starting at the top of Mt. Sheldon, the Roller Coaster is the longest singletrack segment in the park. It starts off with lots of curvy downhill, with the typical Michigan short, steep, grunty climbs in some sections. At the halfway point, you can cut right to head out the Swamp Loop bypass, or turn around and start working your way back up toward the top of Mt Sheldon. After the fast flowy first half and the grindy second half, you pop out right at the beginning of the Back Nine.