Route 66 Ultrarun

Route 66 UltraRun

The Route 66 UltraRun is a centennial ultramarathon held on Historic Route 66 in Arizona. The 2026 edition is presented as a Certified Route 66 Centennial Event and is the fifth annual running of the event. The race honors historical events tied to the road including the 1928 Bunion Derby and Dust Bowl migrations.

The 2026 program includes these distances:

• 140 miles: Seligman to Topock66
• 100 miles: Peach Springs to Topock66

Both courses pass through valleys, piñon pine forests, rugged mountains, desert landscapes, and marshes near iconic Americana. Time limits are 60 hours for the 140 mile race and 48 hours for the 100 mile CenturyRun, with no intermediate cutoffs.

Entry categories include Crewed Runners, Relay Teams, and Journey Runners. Crewed Runners must cover all miles on their own feet with the support of crew or pacers; crew size rules specify at least two and no more than four for the 140 mile race, and a maximum of two for the CenturyRun. With prior approval from race directors, two Crewed Runners may share a crew if they remain together for the entire race. Relay teams compete within their relay division; 140 mile teams comprise three to six members and CenturyRun teams comprise three to five members. Finishers receive commemorative enamel medals and a unique finisher shirt featuring original art. Registration closes on Thu, Oct 1 at 11:59 PM MT. Visit the organization's website for the most recent information.