Logo

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.
Trail runs nearby

Catalina State Park 50-Year Trail Race

Tucson - 23 mi from Vail

Everyone Runs Catalina State Park 50-Year Trail Race and 5k Trail Run & Walk takes place at Catalina State Park near Tucson, Arizona. The event offers a 9.3-mile trail race on the Nature Trail, Bridal Trail, and the 50-Year Trail (about 2.75 miles out-and-back) plus a 5k trail run on the same networ..

Thanksgiving XC Classic 5K

Tucson - 23 mi from Vail

Thanksgiving XC Classic in Tucson’s Reid Park offers a European-style cross-country experience with hay bales along a grassy, dirt-laced course that also touches a bit of asphalt. The event features a 5K that runs two loops and a 1.5-mile fun run/walk that completes one loop. The start area is near..

Southern Arizona Triple 50

Tucson - 23 mi from Vail

The Southern Arizona Triple 50 is a unique ultra running challenge comprising three 50-mile races held in southern Arizona: the Colossal Vail 50 in Vail, the AZT Oracle Rumble 50 in Oracle, and the Old Pueblo 50 in Sonoita. All races take place along sections of the Arizona National Scenic Trail, of..

Vail Jingle Trail

Tucson - 23 mi from Vail

The 20th Annual Vail Jingle Trail takes place in Tucson, Arizona, and offers two festive races: a 5K and Santa’s Little Helper 1K, highlighted for Saturday, December 13, 2025. The event embraces a holiday spirit with decorated courses, cheering crowds, and motivation from Mica Mountain Cross Country..

Empire Ranch Run

Sonoita - 22 mi from Vail

Empire Ranch Run is a trail race at the Empire Ranch in the Las Cienegas National Conservation Area, Sonoita, Arizona. It offers a 10k Trail Run, a 5k Run/Walk, a 1 Mile Walk/Run, and a Children's Mile for ages 14 and under. The family-friendly course runs on dirt trails, BLM 2-track, and cattle pat..

TMC Old Tucson Trail Run 4 Mile

Tucson - 23 mi from Vail

The TMC Old Tucson Trail Run is a popular annual event held at Old Tucson Studios in Tucson, Arizona. It features a 4-mile trail run and a family-friendly 1-mile walk/run, with an additional kids' 1-mile race for participants 14 and under. The course winds through the historic western film set, incl..