Across the Years
Dec 28Peoria, AZBackyard Ultra, 6 days +6
Also a marathon, 68 mi from Mogollon Monster 100, registration open
At a glance
- Last held
- Sep 13, 2026
- Next edition
- 2027 date not announced. Usually held in September.
- Location
- Pine, Arizona
- Distances
- 42K
- Elevation gain
- 15,900 ft
- Aid stations
- 11, 1 with crew access
Listed from UltraSignup. Checked Sep 13, 2026.
Plan this race for free
11 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
The Mogollon Monster 100 is a rugged, challenging trail race taking place about 90 minutes northeast of Phoenix, Arizona just outside the small town of Pine, Arizona. The 100 mile race climbs the Rim in six separate locations with a total of 18,000 feet of climbing.
Key dates
Early Bird ends
Jul 13, 2026
Registration closes
Sep 7, 2026
Race day
Sep 13, 2026
Pricing
All distances
Regular
$380
42K
Regular
$160
Email me updates about Mogollon Monster 100
Registration openings and major changes, like a new date or a cancellation.
Aid stations
11| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
See Canyon Aid Station | 11.10 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Horton Trailhead Aid Station | 21.70 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Fish Hatchery Aid Station | 27.10 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Myrtle Aid Station | 39.60 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Buck Springs Aid Station | 43.10 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Pinchot Cabin Aid Station | 50.70 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Washington Park Aid Station | 59.40 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Geronimo Aid Station | 71.00 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Donahue Aid Station | 80.50 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Pine Canyon Aid | 89.20 miles | -- | watericeelectrolyte drinkssalty snacks+6 | ||
Pine Trailhead Water only; approximately 1.6 miles remain to the finish. | 99.80 miles | -- | water |
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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