Colossal Vail 50/50
Pima County, Arizona, United States
Dec 5, 2026 - Saturday
55k, 50mi, Half-marathon, Ultra
Video
Race Information
The Colossal Vail 50/50 is an adventurous ultra run on portions of the Arizona Trail near the community of Vail (24 miles southeast of Tucson). Starting and finishing at Colossal Cave Mountain Park, the 50-mile, 55K, and Half-Marathon courses feature some of the greatest high desert trail running opportunities in this part of the state.
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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: 100 - 500
Elevation: Some Hills
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
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