4 miles of single-track and some fire roads with some technical rocky climbs <br />
and 1/2 mile flat section at top (Devil's Racetrack).
From Huntsville take Hwy 231/431 north for about 3mi. Left on Hollow Rd. Go <br /><br />about 3/4mi and turn right on Spragins Hollow Rd. Follow the gravel road <br /><br />about 1 mi to the parking lot on the right. Trailhead starts there.
http://www.singletracks.com/item.php?c=1&i=4183