West of Moab, the Amasa Back Trail is an out-and-back dirt bike ride ranging from 10 to 18 miles depending upon how far out you go. This challenging ride following rugged jeep road over rocks, slickrock, sand and ledges. Don't underestimate how challenge of this trail.
To reach the trailhead from Moab, head west on Kane Creek Road for about 6 miles. As the road turns away from the Colorado River at the Kane Creek Trailhead, continue on to the Amasa Back Trailhead.
The trail is another 0.5 miles beyond the parking area. After a steep drop to cross Kane Creek, the trail ascends a peninsula of sandstone surrounded on three sides by a huge sweeping turn in the Colorado. The climb will get your heart pounding: its about 800 feet up in less than two miles. The interesting part is the ledgy Kayenta sandstone that makes the climb much like going up loosely spaced stairs.
Once on top, the views in all directions are astounding, taking in the humpback of Poison Spider Mesa, meandering river and the orange cliffs of Canyonlands National Park beyond the canyons. You can wander on the road for miles before it disappears into the rock, or turn around at any point for a trip from 10 to 18 miles. The return trip down the stairway is a blast and an excellent place to give your suspension a thorough workout.
Overall, Amasa Back Trail is the 1st most popular dirt bike trail of all 68 dirt biking rides in Utah.