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Arizona Monster 300
Monday, March 29, 2027 · Superior, AZ
Register for Arizona Monster 300 →on UltraSignupThe race in 60 seconds
It is one of 26 races on the Arizona calendar that March. The 100+ Mile is rare in Arizona: only one race on the calendar offers it. Unusually for a race, it falls on a Monday.
What race day usually feels like
Based on the last three years, race week in March typically sees lows near 45°F and highs around 69°F: classic PR weather if the wind behaves. Weather normals computed from Superior-area conditions for race week, not the nearest big city.
Common questions
When is Arizona Monster 300?
Arizona Monster 300 is scheduled for Monday, March 29, 2027.
Where is Arizona Monster 300 held?
Arizona Monster 300 is held in Superior, Arizona. It is about 15 miles from Rio Rico and 48 miles from Tucson.
How do I register for Arizona Monster 300?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Feb 6, 2027The DaydreamerPatagonia · 50K, 30K
- Jan 23, 2027Empire Ranch Trail RunSonoita · 10K, 5K, 1 Mile
- Mar 6, 2027Old Pueblo Endurance RunsSonoita · 50K, 50 Mile
- Feb 13, 2027Sonoita Vineyards Wine Run 5kElgin · 5K, 1.5 Miles
See every race on the Arizona calendar, Arizona Ultras, or use the Race Finder for maps and filters.
Register for Arizona Monster 300 →on UltraSignup
Listing data refreshed nightly from the registration platform. Last template review July 2026. Spot an error? Tell us and we'll fix it fast.