Northwest of Vernal and south of Manila in the Ashley National Forest, the Dry Fork Flume Trail is a 24 mile out-and-back route. It is well marked with blue-diamond blazes and routed with wooded signs. This trail closely follows the route of an old wagon road that was used to access both the Dry Fork Flume and the Flume Mill Site near Corral Park. The construction of the flume began in the spring of 1896 as a way to divert water from Dry Fork Creek around the many sinks located there, with the purpose of supplying irrigation water to the valley below. The experiment failed, but left excellent opportunities for hiking, biking and historical interpretation.
To reach the mountain biking trailhead from Vernal, go west on 500 North, past Uintah High School to 3500 West in Maeser. Turn north and follow that road approximately 12 miles until the pavement ends and gravel begins at the Ashley National Forest boundary. Park at the small parking area on the right side and start riding where the trail starts on the left side. The trail consists of sections of level and rolling two track and sections of steep and technical singletrack plus two creek crossings. The last stretch of 3 miles is a grueling climb before it levels out near the mill site.
Overall, Dry Fork Flume Trail is the 50th most popular mountain bike trail of all 74 mountain biking in Utah.