Green Valley 540

The Green Valley 540 is an unusual racetrack 1.56 miles (2.5 km) in length in Green Valley, Missouri that spirals through a mineshaft, and resembles a cross between an oval and a road course. The track has a corner in the mineshaft that turns 540 degrees, which is why the number features in the track name.

It hosted the 2008 ARLA All-Star Week and the 2012 Missouri Grand Prix for Formula Overdrive.