Milk and Cookies Loop: Got Milk?  And Cookies. Plus beginner-level Combo trail option.
This ride is an six-mile loop on McCoy Flat west of Vernal. It can be ridden either direction. The components are the Got Milk? trail to the west of the McCoy Flat road, plus the And Cookies trail on the east side. The ride is quite easy technically. There's only about 200 vertical feet of climbing for the entire ride. An even-easier option is to link And Cookies with Combo. This makes a 3.5-mile loop of very easy singletrack suitable for beginners.
Riding notes, Milk and Cookies clockwise loop:
0.0  Cross paved road to DT  N40 21.019 W109 34.913
Immediately fork R on ST  N40 21.003 W109 34.928
Easier route: 100 feet on DT, then fork R
0.3  Merges with alternate route  N40 20.992 W109 35.163
1.1  Keep R (L = Fire Sale)  N40 20.830 W109 35.982
1.3  Trail merges with ATV track
Keep R (L = Retail Sale)  N40 20.716 W109 36.093
1.35 Pass tiny ST on R
Take ST on R 100 feet past Retail Sale fork
N40 20.711 W109 36.120

1.6   Fork R  (L= More Hoes)  N40 20.811 W109 36.348
3.6   Cross paved road  N40 22.117 W109 35.663
3.9   And Cookies / Combo fork, go L  N40 22.061 W109 35.481
5.0   Keep straight (R) at Jackalope fork  N40 21.412 W109 34.992
5.7   Cross DT  N40 21.126 W109 34.800
5.9   Keep R (Jackalope joins on L)  N40 21.022 W109 34.806
6.0   Back at corral

Beginner route! Riding notes, Cookies and Combo counter- clockwise loop:
0.0  Find southbound ST on southwest side of DT
Trail = And Cookies   N40 21.028 W109 34.902
0.1  Fork L (R = return trail)  N40 21.022 W109 34.806
0.3  Cross DT   N40 21.126 W109 34.80
1.0  Fork L (R = Jackalope)
N40 21.412 W109 34.992
2.0  Fork L onto Combo  N40 22.061 W109 35.481
3.5  Back at corral

Getting there:
While driving toward Vernal on US-40, pass mile marker 138, then turn right on the narrow paved McCoy Flats road (unmarked, 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 to a corral on the left and park there. The trail starts directly across the paved road from the corral. At the doubletrack, veer right onto singletrack trail.
Camping: BLM land, primitive camping allowed. No developed sites.
Bathroom: None
Water: Bring your own.
Bike services, maps, trail conditions:
Altitude Cycle, 580 East Main, Vernal. 435-781-2595