View southeast toward the La Sal Mountains, showing a fork off Seven Mile Canyon...
View southeast toward the La Sal Mountains, showing a fork off Seven Mile Canyon near the beginning of the Rockin A. Photos and write-up by Bruce, April 2009.

Seven miles north of Moab, the Moab Brand Trails offer a wide variety of biking fun. The Rockin A trail is a short technical section, only 1.8 miles long. However, the up-and-down  quick-turn type of riding makes it a fair amount of work. This trail connects the southern end of the Bar M Loop and the Bar B Loop to the Circle O trail.

The shortest ride that includes the Rockin A trail is 8.7 miles. This is a counterclockwise trip around the Bar M, skipping a one-mile portion of Bar M to ride the Rockin A.
Handlebar view of some smoother slickrock on Rockin A. Note the riding line and ...
Handlebar view of some smoother slickrock on Rockin A. Note the riding line and some faint yellow stripes to guide you.
Climbing out of Rockin A on the clockwise ride.
Climbing out of Rockin A on the clockwise ride.

Rockin A is significantly more technically than Circle O . But it's half as long. So if you're trying to choose one over the other, Circle O will be more satisfying for an early-intermediate rider.

Rockin A is uphill -- and a harder ride -- in the north-to-south clockwise direction. My video shows it clockwise, but most riders prefer to ride from south to north. This puts Rockin A slightly downhill in the toughest sections.

Hard-core bikers will ride Bar M to the Bar B trail (right across from the Rockin A's start), then ride the Bar B loop before entering Rockin A.

After completing Rockin A, ride Circle O before completing your loop. Or, head back to Bar B and drop down Killer B .

View to the west. The cliffs are across the highway.
View to the west. The cliffs are across the highway.
Typical trail surface. The route goes straight up in this photo.
Typical trail surface. The route goes straight up in this photo.
The ride is 100% slickrock. The Entrada sandstone forms waves, so you'll be constantly making short climbs and descents. There are a couple of ledges and wheel-traps that require either technical skill or a dismount. There's no cliff exposure or other truly hairy stuff.

 M.O.A.B. ride with Circle O and Rockin A

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0.0 Exit parking, turn right and ride south0.7 Pass Gemini underpass, keep straight1.7 Fork L (leave 191)2.3 Fork R (L = Bar M shortcut)2.9 Keep straight (Bar M loops to L)After 100 feet, fork L on ST(option: ride Bar B loop first)4.7 At Circle O(option: fork R to ride Circle O)L to return to Bar M4.9 R on Bar M8.7 Back at parking
The trail is marked by a stripe of stain on the slickrock (hard to see in the ea...
The trail is marked by a stripe of stain on the slickrock (hard to see in the early morning or evening) and periodic Rockin A marks as shown at left.
From the north: Drive south on US-191 for 22 miles south of I-70. From Moab, drive 7 miles north from the Colorado River on 191. When you see the Gemini Bridges parking area, look for a gravel road on the opposite side (east, away from the cliffs). Turn onto the gravel road and immediately go right, then right again into the parking area. GPS N 38° 39.38' W 109° 40.66'. The trail starts by riding the gravel road either north or south. Our ride description assumes you'll ride south out of the parking lot, counterclockwise on the Bar M.
Riding resources for this trail: Single-page riding guide GPS track files (right-click and "Save as..."):    GPX file all Moab Brand area trails    Course track Bar-M w Circle O + Rockin A    Expert Tour Bar-M-O-A-B-plus High-res topo (500 KB):  View   Lodging, camping, shops:    Links to Moab area resources