The small oval just below the track (with the straigtaways running parallel with the big track) is the go kart track. They race on Friday nights all summer. Once a month they run on Saturday night. It's neat for the fans because you can watch their races from the top of the main grandstands during any down time. It's a pain for the competitors though, as you neeed to use an alternate entrance to the pits off of the backstretch.

The even smaller oval (with the straigtaways running perpendicular to the big track) is in the middle of the pit parking lot. I'm not sure what it was used for but you can still see what's left of it today.