Jackass Night Trail

OCT-NOV
31-1
2026
A single-loop night race on the Javelina Jundred course, the 31 km Jackass Night Trail mixes desert singletrack, four aid stations, costume fun and glow-in-the-dark atmosphere.
31-1 Oct-Nov 2026
31 kilometers

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Jackass Night Trail

Jackass Night Trail is a night race held as part of the Javelina Jundred weekend at McDowell Mountain Regional Park near Fountain Hills, Arizona. The event follows a single loop of the Javelina Jundred course and is offered as the 31 km (19 miles) Jackass option so runners experience the park, aid stations, and the Jackass Junction party during a single night loop.

The loop runs primarily on desert singletrack including sections of the Pemberton Trail, sandy washes, and moderate climbs with varied footing. Runners pass four on-course aid stations each loop: Javelina Jeadquarters (start/finish), Coyote Camp, Jackass Junction, and Rattlesnake Ranch. The longest aid stretches noted are about 6.5 miles between Coyote Camp and Jackass Junction, and a similar distance between Rattlesnake Ranch and the start on the first loop. Aid stations carry water, ice, sports drinks, gels, sweet and salty snacks, fruit, and several prepared food options.

The night format emphasizes costume and glow gear; recommended items include a headlamp and spare batteries. There are no pacers allowed for the 31 km race and crewing is restricted to Javelina Jeadquarters. Participants should be prepared for exposed desert conditions, wide temperature swings after sunset, and an event environment that includes loud or risqué entertainment; organizers reserve the right to remove anyone who interferes with staff or other runners. Visit the organization's website for the most recent information.

31 km

Events nearby

Night trail races at McDowell Mountain Regional Park offering 7K, 15K, 25K, 50K and 75K on rolling desert single track with stocked aid stations, live tracking, a cupless policy, crew access at the start area, and chip timing.
Charity bib entries reserve spots in the Javelina Jundred 100 Mile and 100K races at McDowell Mountain Regional Park with fundraising minimums of $4,000 and $3,000. The 100 Mile is a 2027 Western States qualifier and a Golden Ticket race.
Individual trail races at McDowell Mountain Regional Park on November 6-7, 2026 offering Single Loop, 6H Ultra and 24H Ultra options across Sonoran Desert trails.
Two day trail relay at McDowell Mountain Regional Park on Nov 6-7, 2026, covering 121 miles with team divisions, onsite camping, and desert scenery.
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