The Jalloween experience at 62 miles — same desert, same party, shorter night
Other trail races within 54 miles
The 100K follows the Javelina course's first three loops: one 22-mile Escondido opening loop and two 19-mile Pemberton repeats, totaling 62 miles. It shares all of the same aid stations, crew access, and Halloween atmosphere as the flagship event — including the legendary scene at Jackass Junction — with a more approachable distance for runners stepping up from 50K territory.
Fountain Hills, AZ, United StatesOctober 31, 2026
Javelina Jundred 100K is a multi-loop trail race in Fountain Hills, AZ, United States, held on October 31, 2026. The course covers 62 miles, climbs 3,960 ft, and has a 29h cutoff.
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Start Start | 0.0 | 1,693 ft | — | |||
Coyote Camp Aid Station | 3.9 | 1,867 ft | — | |||
Jackass Junction Aid Station | 10.3 | 2,467 ft | — | Drop Bags | ||
Rattlesnake Ranch Aid Station | 15.4 | 1,906 ft | — | |||
Javelina Headquarters Aid Station | 22.3 | 1,693 ft | — | Crew | Drop Bags | |
Coyote Camp Aid Station | 24.8 | 1,867 ft | — | |||
Jackass Junction Aid Station | 31.3 | 2,467 ft | — | Drop Bags | ||
Rattlesnake Ranch Aid Station | 36.4 | 1,906 ft | — | |||
Javelina Headquarters Aid Station | 42.1 | 1,693 ft | 23h6:00 AM +1 | Crew | Pacers | Drop Bags |
Coyote Camp Aid Station | 44.6 | 1,867 ft | — | |||
Jackass Junction Aid Station | 51.1 | 2,467 ft | — | Drop Bags | ||
Rattlesnake Ranch Aid Station | 56.2 | 1,906 ft | — | |||
Finish Finish | 62.0 | 1,693 ft | 29h12:00 PM +1 |
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Multiple camping options at Javelina Jeadquarters: pre-set Tent City rentals (with optional cots and sleeping bags), BYO tent camping, car camping, and RV camping. Camping passes reserved through Ultrasignup registration on a first-come, first-served basis. Check-in begins Friday before race day.
Same Sonoran Desert conditions as the 100-mile: warm sunny days (70-85°F) and cool desert nights in the 40s. The 100K starts at 7 AM, giving runners a full day of sun before transitioning into Halloween night.
Daytime temperatures can reach 80-85°F on fully exposed desert singletrack
Overnight temperatures drop to the low 40s°F; layering essential for all runners continuing into the night
Open desert course with minimal shade; sunscreen strongly recommended for daytime miles
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