North of Vernal, the Range Study Loop is a 10 mile route through aspen groves and occasional wildflowers with vistas of Diamond Mountain. The starting altitude is 8,500. Note: open to off-road motorcycle trails riding 12/20 - 5/15.
To reach the trailhead from Vernal, head north along US 191 for 24 miles. On the right and just off the highway is the signed trailhead. Park here. Ride through the gate and continue along the double track dirt road, heading southeast. After about four miles of easy cruising, the trail bottoms out in a draw. Take a sharp right and climb out of the draw along a steep hill for about 1/3 mile. After this climb, the trail gradually ascends for the next 5 miles, leveling off just before the trailhead where the loop ends.
Check out the Basset Springs Loop (4 miles) just across US191.
Overall, Range Study Loop is the 58th most popular dirt bike trail of all 68 dirt biking rides in Utah.