High Rollas
High Rollas is a lariat loop trail in the McCoy Flat mountain bike trail system just west of Vernal. The ride is rated expert because of a couple of spooky plunges and a somewhat rough trail surface in the climb and descent. The riding season is April through November, with a trailhead elevation of 5300 feet. High Rollas itself is 5.4 miles long. But the entry to the trail lies on the Got Milk and Retail Sale loops a mile west of the trailhead. So the minimum ride that hits High Rollas is 8.2 miles with 800 vertical feet of climbing.
Trail conditions, alignments, and connections will change. Use this guide at your own risk. 2016 UtahMountainBiking.com
Riding directions, 8-mile out-and-back:
0.0    Trail west side of parking
N40 21.015 W109 34.847
Immediate left fork, cross road
Immediate veer right on Got Milk
N40 20.970 W109 34.926
0.1    Cross doubletrack
1.2    Straight (L = Fire Sale)
N40 20.830 W109 35.982
1.4    R and uphill on High Rollas
N40 20.716 W109 36.093
1.5    Keep L N40 20.850 W109 36.147
2.3    R to enter loop
N40 21.335 W109 35.997
2.7    Southeast corner
3.6    Fin at north corner
4.7    Southwest corner
5.4    Minor middle south corner
5.7    Finish loop, R downhill
6.4    L on More Pimps
N40 20.894 W109 36.138
6.6    L and rejoin High Rollas
6.7    L on Got Milk
8.2    Back at parking
Getting there:
While driving toward Vernal on US-40, pass mile marker 138, then turn right on the narrow paved McCoy Flats road ( N40 23.427 W109 35.752). If you miss McCoy Flats road, go to the viewpoint overlooking Vernal and backtrack exactly 2 miles, then turn left into the road. Drive 3 miles. Immediately after passing a corral on your left, turn into the large fenced BLM trailhead parking lot.
Camping:
BLM land, primitive camping allowed. No developed sites. Bathroom: At trailhead. Water: Bring your own.