Mogollon Monster

Event overview

The Mogollon Monster takes place on the Mogollon Rim near Pine, Arizona on the weekend of September 12-13, 2026. The event offers two distances:

• 100 Mile
• 42K (about 26.7 miles)

The 100 mile race is a point-to-point trail ultramarathon that runs largely along the Rim and finishes in the town of Pine. The course gains high elevation, reaching up to about 8,000 feet and staying above roughly 5,200 feet for much of the route. Total climbing on the 100 mile course is on the order of tens of thousands of feet (race materials list approximately 15,900 to 18,000 feet). The terrain includes technical singletrack on sections such as the Highline, Donahue, Myrtle, and Promontory trails.

Course features, requirements, and logistics

The 100 mile course includes six separate climbs of the Rim and many steep sections. Weather in mid-September can vary: daytime temperatures near the Rim typically reach the 70s to 80s, while nights on the Rim can drop below freezing; monsoon thunderstorms are possible. The 42K follows parts of the Highline and Donahue trails and shares the final miles into Pine with the 100 milers.

Qualification: 100 mile entrants must have previously completed at least a 50 mile race. The 100 mile distance also requires eight hours of pre-race volunteer service or a suggested donation alternative. The 2026 100 mile race is listed as a qualifier for Hardrock 100 and Western States 100 for the 2027 season. Visit the organization's website for the most recent information.