Arizona Monster 300

Patagonia, United States • 27-3 Mar-Apr 2026

Event Overview

The Arizona Monster 300 is a point-to-point ultramarathon covering 304 miles through Southern Arizona's Sonoran Desert. The route gains over 41,000 feet in elevation and features a mix of single-track trail, bike paths, and paved and dirt roads.

Course and Terrain

The course is located near Patagonia, Arizona. The terrain consists of approximately 259 miles of single-track trail, 34 miles of bike path, 9.5 miles of paved road, and 6 miles of dirt road. The event takes place on National Forest Lands and has an overall cutoff time of 170 hours.

Event Details

The route includes 19 aid stations. The Sonoran Desert setting is characterized by subtropical winter warmth and two rainy seasons, supporting diverse plant and animal life. The course traverses high-elevation mountains and backcountry terrain. Visit the organization's website for the most recent information.

Race information

304 mi
Arizona Monster 300
Visit the organization's website for the most recent information.
Trail runs nearby

The Old Pueblo Endurance Runs will take place in Sonoita on Saturday 7 March 2026.

Join the CAT DIRT DASH 5k or 1 mile fun run on desert dirt trails at Caterpillar Tinaja Hills in Green Valley, AZ, running past real Caterpillar machines. Limited to 300 runners and includes a 2026 event hat for paid participants.

Explore the historic Empire Ranch on the Las Cienegas National Conservation Area. Choose from a 10k, 5k, or family mile on scenic trails. The event also features ranch history demonstrations and supports the Empire Ranch Foundation.