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A short loop of desolate desert singletrack.

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359' 110 m


184' 56 m


269' 82 m


272' 83 m



Avg Grade (1°)


Max Grade (5°)

Dogs Unknown

E-Bikes Unknown


This loop is a great introduction to riding in the Sugarloaf area. With its surreal and barren landscape, this is a wonderful place to ride if you're looking for solitude.

Once you've mastered this loop, there are more than 50 miles of connecting trails to continue explore, expand your endurance, and your riding skills!

Need to Know

Winter riding is a dream. Riding in the summer heat is brutal, but you'll have the trails to yourself.

There is regular traffic on weekends in the winter, but the area is never heavily used and in the summer there is virtually no traffic. This is backcountry riding, during summer months, it is unlikely you'll be found if you need help.


Bill's Loop is THE ride for those who are interested in exploring the desert, but not sure what to expect. It is short enough that you can walk the entire loop, no pressure. Ride this loop and you'll have conquered most of the conditions you might run into on the other trails in the complex.

When trail-work has been done, this loop is mostly smooth and easy, but if work has not been done (there is no organized maintenance, it's all done by riders on their own) riders will find a number of climbs/descents with loose-on-loose gravel in deeply rutted tread. All of these segments are wide enough to be easily HABed (Hike-A-Bike'ed).

There is one short stretch of deep sand that now has a sweet little armored bypass that will challenge your "skinny" riding skills. Much work has been done to discourage riders from riding over the top, which is a significant erosion concern in this spot.

There are a few short sections where the trail narrows and has "exposure, a steep slope dropping away on one side. Experienced riders will not notice these features, but inexperienced riders sometimes get nervous here. Have no fear, these sections are all easy to walk.

At just over 4 miles, this loop is the perfect place for intermediate or beginner-intermediate riders to improve their skills and start to build endurance. Be aware that the sun is intense, and you'll be in the desert, so if you're planning on being out, bring plenty of water. Especially in the summer months, dehydration can turn a fun outing into a slog.

History & Background

The loop is commonly ridden by, and is named for, a 74 year old local rider who has been riding this loop for decades. He rides a cheap hard-tail, without a helmet, with a plastic bag bungeed to his pannier rack in lieu of a backpack. According to Bill, his mother would die of embarrassment if he wore a helmet. This ride includes Front Yard, Back Yard, and Ryan's Trail.


Shared By:

Karl Ingersoll

Trail Ratings

  4.3 from 8 votes


  4.3 from 8 votes
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in Arizona


31 Views Last Month
2,842 Since May 24, 2015
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Yuma Composite middle school MTB team out for their first taste of true singletrack
Nov 11, 2017 near Yuma, AZ
Dip and climb.
Jan 24, 2016 near Yuma, AZ
Yuma Composite middle school MTB team practices their switchbacks.
Nov 11, 2017 near Yuma, AZ
Ryan's Trail with Pilot Knob in the distance.
Jan 24, 2016 near Yuma, AZ
Desert pavement.
Jan 24, 2016 near Yuma, AZ
Climbing turn on Ryan's.
Jan 24, 2016 near Yuma, AZ


Current Trail Conditions

Add Your Check-In


Oct 10, 2020
Benjamin Florey
Jan 19, 2019
Jamaicbilly Aldstadt
Oct 13, 2018
Oz Rivera
For my first time out, this trail is sweet! If Bills loop were the only singletrack out here, it would be plenty fun for repeat visits. 4.3mi
Feb 10, 2018
Waylon Cabe
Feb 1, 2018
Mitch Schulz
Dec 23, 2017
Larissa Sandman
Team RWB Run 4.3mi
Jan 18, 2017
Brea Witt
Great loop for a quick ride. Plenty of little challenging sections.
Jan 8, 2017
Chris Kaplan

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