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​September 6-7, 2025

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Mogollon Monster 100

100 Mile | 42K

Mogollon Rim - Pine, AZ

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 Mogollon Monster includes the advanced degree endurance race of 100 miles, with the addition of a 42 Kilometer race on Sunday.  The races navigate up, down, around and through the beautiful Mogollon Rim (Pronounced: mug-ee-yun or muggy-own by locals).

The Mogollon Rim rises out from the earth some 2,000 feet for a span of 200 miles across Arizona and into New Mexico, defining much of the eastern part of the state.  This Rim takes the race from elevations of 5,300 feet at the start to upwards of 8,000 feet at the top of the Rim, changing ecosystems along the way in distinct flora changes as the elevation changes switch the scenery from high Sonoran Desert to the largest contiguous Ponderosa Pine forest in the world.

The race covers roughly 101 miles, climbing the Rim on six separate locations spending a lot of miles along the Rim, on top of the Rim and the challenging climbs up and down with climbs and descents at 30-45% grades at a some points. Expect to climb a total of approximately 17,000 feet along the way, never below 5,200 feet and never above 8,000 feet in elevation.  While other races are certainly at higher elevations, and/or with more climbing, they certainly do not contain as rugged a terrain that is found on this course.

*Distances may vary slightly each year due to permitting.

Start Times

Saturday, September 6
100 Mile  - 6:00 am

Sunday, September 7th
42K - 7:00 am

Bib Pickup

Friday, September 5th
4:00 pm - 7:00 pm
Old County Inn
3502 N HWY 87
Pine, AZ 85544

Saturday, September 6th (100 Mile)
5:15 am - 6:00 am
Two-Sixty Trailhead

Sunday, September 7th (42Km)
Pine Trailhead
6:15 am - 7:00 am

Weekend Happenings


Friday, 9/5  |  4p-7pm
Packet Pickup

Sunday, 9/7   |  12p-4pm
Ten Dollar Wedding Bluegrass Band| At finish line with after-hours at Dirty Hippie from
5:00 pm -7:30 pm

Sunday, 9/7 ~ 7pm-8pm
Golden Hour - 100 Mile Finishers
Pine Community Center

Monster Training Runs

Fish Hatchery Trailhead
Saturday July TBD 7:00am
18 mile loop including Myrtle Climb (click link above for track)
Led by Aaron Barber

August TBD 7:00 am
Meet at Fish Hatchery, carpool to See Canyon TH. Complete miles 11-26 of 100M course.


Runner Guide

With the recent route changes due to the West Fire, please refer to the information on this page. 

Previous editions of the Runner Guide are no longer relevant, but this page is up to date.
100 Mile Runner Guide

Volunteer

We need help to make Mogollon Monster possible. Volunteer perks include Aravaipa race credits and race swag!
Volunteer Now

Qualifications

The 100 mile distance is not an easy race and as such, we have a qualification standard for the race. All 100 Mile entrants will be required to have completed, at minimum, a 50 mile race or greater before race day.

Live Tracking

Follow the 2025 Mogollon 100 Miler & Marathon with live split points throughout race weekend.
Aravaipa Live

Hardrock Qualifier

The 2025 Mogollon Monster 100 Mile race will be a qualifier for the Hardrock 100 in 2026.

The current qualifying races for Hardrock are:
2023 Mogollon Monster 100 Mile: 2024 & 2025 Hardrock
2024 Mogollon Monster 100 Mile: 2025 & 2026 Hardrock
2025 Mogollon MOnster 100 Mile: 2026 Hardrock
See additional details here: Hardrock 100 Qualifying Races

The Monster is NOT a Western States 100 qualifier.

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Register Now
Registration closes: Mon, Sep 1 @ 11:59PM MT

Race Registration

Until 3/2 Until 7/6 Until 9/1
100 Mile $330 $355 $380
42K $130 $145 $160
*Race shirts guaranteed on race day if ordered by 8/15. Registration also available at Packet Pick-up depending on availability.
Withdrawal Policy

Course Information

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Key Stats
Date | Saturday, September 6, 2025

Start Time | 6:00 am

Time Limit | 38 Hours

Distance | 101.3 Miles

Total Elevation Gain | 15,900 feet

Max Elevation | 7,912 feet

Women's Course Record | 24:42:24 - Megan Eckert  (2023)

Men's Course Record | 20:52:07 - Jeff Browning (2021)

Course Map
CalTopo Course  Map

100 Mile Event Details

Course Preview Video

Results & Photos


Thank you to our sponsors!