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Colossal Vail 50/50

Vail, United States • 6 Dec 2025

Colossal Vail 50/50, presented by Fleet Feet Tucson, is a trail ultramarathon near Vail, Arizona, starting and finishing at Colossal Cave Mountain Park. The event offers 50 miles, 55K, and two 13-mile options (day and night half-marathons), all on a rolling high-desert section of the Arizona Trail east of Tucson. The course emphasizes fast trails, scenic vistas, and supporter-led aid stations, designed for both first-time ultras and seasoned runners. Special features include five aid stations (four used twice), engraved railroad-spike finishers’ awards for ultras, a wooden half-marathon trophy, and a CUPLESS policy with reusable cups. Bees may be present; come prepared. Visit the organization's website for the most recent information.

United States Arizona Vail

Race information

Website Registration
50 mi
50 Miler
55 km
55k
13 mi
13 Miler
13 mi
13 Miler Night
Visit the organization's website for the most recent information.
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