Mogollon Monster 100 2026

Mogollon Monster 100 2026

Presented by Aravaipa Running
Trail Running
Pine, AZ
Sep 5–6, 2026
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About This Event

The Mogollon Monster 100 traverses Arizona’s dramatic Mogollon Rim, a 200-mile geological formation that rises 2,000 feet from high Sonoran Desert into expansive Ponderosa Pine forest. Located about 90 minutes northeast of Phoenix near the town of Pine, this Aravaipa Running event offers both 100-mile and 42K distances across some of the Southwest’s most demanding terrain.

The 100-mile course climbs the Rim six times, accumulating roughly 18,000 feet of elevation gain while never dropping below 5,200 feet or exceeding 8,000 feet. Runners face sustained climbs and descents at 30-45% grades on incredibly rugged terrain. The route follows historic trails including the General Crook Trail and sections of the Arizona Trail, connecting remote aid stations through technical, rocky passages.

Starting at Two-Sixty trailhead near Payson, the course immediately challenges participants with a 1,000-foot climb over two miles up the Mogollon Rim. Key segments include the exposed, rocky Highline Trail, steep ascents up Horton Springs and the Myrtle Trail, and navigation through the Cabin Loop near Pinchot Cabin. The final stretch descends into Pine Canyon before finishing at the Community Center in Pine.

The race serves as a Hardrock 100 qualifier and requires participants to have completed at least a 50-mile race. The 42K option starts at AZT Pine Trailhead, offering the same challenging terrain in a shorter format. Both distances demand significant technical trail running experience due to the sustained elevation changes and rugged high-desert conditions that define this corner of Arizona’s wilderness.

Aravaipa Running

Event Organizer
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Aravaipa Running is a premier trail running event producer based in Arizona, known for its well-organized and challenging trail races that attract athletes from around the world. With a commitment to providing exceptional race experiences, Aravaipa Running hosts several of the most revered trail races in the Southwestern United States, each offering unique terrain, stunning scenery, and a test of endurance.

Prominent Events by Aravaipa Running:

  1. Mogollon Monster 100: Held in the rugged terrain of the Mogollon Rim in Arizona, the Mogollon Monster 100 is a true test of endurance. The race features a 100-mile course with a total elevation gain of approximately 18,000 feet. Runners traverse diverse ecosystems, from the high Sonoran Desert to expansive Ponderosa Pine forests. The course is known for its steep climbs and descents, with gradients reaching up to 45% in some areas, making it one of the most challenging ultra-marathons in the region​(Strambecco).
  2. Black Canyon Ultras: Set in the heart of Arizona’s Sonoran Desert, the Black Canyon Ultras offers both 100K and 60K options. This event is renowned for its scenic yet tough course that takes runners along the historic Black Canyon Trail. The race begins with a fast, downhill section but quickly transitions into technical terrain with steep climbs and rocky paths. The 100K race is a Western States 100 qualifier, adding to its prestige​(Strambecco).
  3. Tushars Mountain Runs: This event, which takes place in the high-altitude Tushar Mountains of Utah, includes a 100K and 70K course. Starting at 10,500 feet, the race challenges runners with significant elevation changes, including summiting Mt. Delano at over 12,000 feet. The course offers breathtaking views and tough climbs, making it a favorite among trail runners seeking a high-altitude adventure​(Strambecco).

Aravaipa Running is celebrated for its meticulous attention to detail, from well-stocked aid stations to comprehensive runner support. Each of their events not only challenges participants’ physical limits but also showcases the natural beauty of the Southwestern U.S. Whether you’re a seasoned ultra-marathoner or a trail running enthusiast, Aravaipa’s races are events not to be missed.

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