East of Cedar City and west of Bryce, the Red Canyon area is a scenic red rock canyon with pine and sage forests laced with a nice dirt biking trail network.
The main trail is the Casto Canyon Trail (#89). It is a 10.6 mile round trip out-and-back route following the canyon bottom. The trail begins at the mouth of Casto Canyon and connects with the Cassidy Trail (no ATV). This is considered the most scenic of all the large canyons in the Red Canyon area.
To reach the dirt biking trailhead for Red Canyon from Cedar City, head east on SR14. It dead ends at US89. Turn left heading north on US89. At SR12, turn right heading east for about 3 miles into Red Canyon. The trailhead parking is on the left (north side of the road).
To reach the trailhead from Bryce, head west on SR12 into Red Canyon.
Overall, Red Canyon is the 7th most popular dirt bike trail of all 68 dirt biking rides in Utah.