Arizona Monster 300

Arizona Monster 300 (March 29 - April 4, 2027)

The Arizona Monster is a 300.5 mile point-to-point ultramarathon through the Sonoran Desert around Patagonia, Arizona. The route crosses backcountry terrain and high-elevation mountain ranges and moves through long sections of single-track, bike path, dirt road, and paved road.

Course statistics include 41,162 feet of elevation gain and 41,463 feet of elevation loss. The event lists 19 aid stations and a total cutoff of 150 hours, equal to 6 days and 6 hours. Terrain breakdown notes about 259.1 miles of single-track, 34 miles of bike path, 9.5 miles of paved road, and 6 miles of dirt road.

The event provides live runner tracking, drop bag transport to many aid stations, aid stations with food and drinks, sleep stations, and an on-site medical team. Organizers offer a bus option to reach the start when parking at the finish is preferred. Registered participants receive event items including a duffel bag and race shirt, and finishers receive awards such as handmade buckles, a custom finisher print, and a finisher mug.

Registration for the 2027 race uses a lottery system. Lottery registration opens April 10, 2026, runs through April 26, and lottery winners are announced April 27. Donations from the event benefit the Arizona Trail Association, Patagonia Youth Enrichment Center, and the local food bank. Visit the organization's website for the most recent information.