Ajo Mountain Loop
ElevationAscent: 1,143' 348 m
Descent: -1,143' -348 m
High: 2,623' 799 m
Low: 1,667' 508 m
GradeAvg Grade: 2% (1°)
Max Grade: 10% (6°)
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“A solitary dirt road loop takes you to the foot of the Ajo Range through remote Sonoran desert.”— Lost Justpastnowhere
Most of the loop is gravel with the exception of a few especially steep sections along the climb which have been asphalted.
Cross the busy highway AZ85 to the dirt road opposite the visitor center. After 2.5 miles, you'll come to an intersection. Cars must do the route clockwise, bikes might get away being rebellious and going counterclockwise. After the intersection, you begin an increasingly steep 1000 ft climb over about 7 miles to the high point.
Stop 5 (about halfway up, but right before the big climb) is nice because it overlooks a wash and because it has a covered veranda. Stop 6 is also nice because it offers a nice view back across the lowlands. After that, the steepest climb begins, but when you crest the hill, the Ajo Range in all its majesty opens in front of you.
As you near the top of the climb around mile 10, a natural arch is visible off in the distance. The Arch Trail (hiking only) runs up the valley and then climbs steeply up to the arch.
The Arch trailhead is also the signal that the climbing is done. The next big milestone is the veranda at around mile 11. This is also the trailhead for the Estes Canyon and Bull Pasture hiking trails.
After that, it's a gentle, quiet spin downhill back to the visitor center.
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Family Friendly, ADA Accessible, Features, Electic Mountain Bikes Allowed, History & Background
Land Manager: NPS - Organ Pipe Cactus National Monument