Flagstaff Loop Trail

OCT
9
2027
A no-fee, unofficial 45 mile trail event on the Flagstaff Loop with unmarked course, aid stations stocked by participant contributions, and a required GPX navigation device.
Sat 9 Oct 2027
45 miles

Always double-check with the organizer's website! This page may contain affiliate links.

Flagstaff Loop Trail 45 Miler

The Flagstaff Loop Trail 45 Miler is an unofficial "fatass" style race with no entry fee and limited race-provided resources. The route follows the Flagstaff Loop Trail for roughly 45 miles and includes about 3,300 feet of elevation gain. Because the trail system is still evolving, actual race distance may vary by about a mile.

The course is unmarked, so each participant must carry a device capable of loading a GPX file for navigation. Aid will be available at five points along the route, stocked with water and participant contributions brought to the start. Aid station locations and segment distances are:

  • Sandy Seep Trail Head 10.5 mi segment 10.5 mi total
  • Campbell Mesa Trail Head 7.7 mi segment 18.2 mi total
  • Lake Mary Road JW Powell 10.8 mi segment 29 mi total
  • Woody Mountain Road FS 532 6.3 mi segment 35.3 mi total
  • Schultz Creek Trail Head 10.4 mi segment 45.7 mi total

One drop bag is allowed at the Lake Mary JW Powell aid station (mile 29); drop bags should be submitted to the starting area in advance. The event is cupless; participants are encouraged to bring a soft flask or soft cup for liquids.

Organizers require each participant to bring a consumable contribution such as cookies, chips, or sports drink to stock the aid stations; contributions will be assigned with at least one week notice. Recommended gear includes a headlamp, enough food and water for the longest unsupported segment of about 12 miles, and clothing for variable October weather. Visit the organization's website for the most recent information.

Events nearby

End-of-season Girls on the Run 5K at Buffalo Park in Flagstaff where participants complete a noncompetitive 3.1-mile course with medals and family-friendly activities.
Trail marathon and half marathon in Mountainaire, AZ on November 8, 2026 with single track and forest road courses. Free entry with encouraged donations, limited course markings, aid stations, approximate distances, no official timing.
Winter 5K at Buffalo Park in Flagstaff on January 30, 2027, with in-person and virtual options plus long sleeve shirts and age group awards.
Community mountain races at Arizona Snowbowl on Feb 20, 2027, featuring hikes and skinning events that raise funds for youth environmental education.
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