Mainly Marathons Southwest Series - Day 4
Flagstaff, Arizona, United States
Nov 11, 2026 - Wednesday
5k, 10k, 50k, Half-marathon, Marathon, Ultra
Video
Race Information
Southwest Series is organized by Mainly Marathons, one of the largest race organizers in the US, with races in all 50 states. You can participate in one race or take the challenge to complete the whole series!
Mainly Marathons races are designed for runners who run long and run often. All finishers in races longer than half marathon get a custom metal-stamped nameplate!
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👍 Run Pick of the Month: Phoenix Marathon
📍Phoenix - Saturday December 12, 2026
💸 SAVE $20 On Your Entry. Use Code RG20
😄 Why We Like This Run
✅ Fast & beautiful course with desert views
✅ Built for your PR or BQ
✅ The finish line festival
Ready to conquer the desert and "Earn the Bird"? Whether you’re chasing a Boston Qualifier or looking for an unforgettable desert run, the Phoenix Marathon offers a premier racing experience right in the heart of the Valley.
Built entirely around the runner, this event combines the scale of a major city race with the welcoming spirit of a hometown favorite.
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Race Facts
Race Size: 1 - 100
Elevation: Fast and Flat
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
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