Trail Running calendar near McMillan Mesa 2026-2027

A volunteer-run trail race on October 10, 2026 in Government Prairie offering 30K, 18K, 10K, early-start options and a Kids Dash; 100% of proceeds support Big Brothers Big Sisters of Flagstaff.

A trail half marathon from Sandy Seep trailhead around Mt Elden with a steep climb to the summit, one staffed aid station at about six miles, technical single track descents, limited parking, and strict time cutoffs.

Trail Running Escapes hosts a one day trail event in Sedona on October 17, 2026, with marathon, 20 mile, 10 mile and 2.5 mile courses across red rock singletrack, stocked aid stations, GPX routes, and a Vendor Village at the finish.

Trail races on October 24, 2026 near the Grand Canyon South Rim offer marathon, half marathon, 5k, children s 5k, relay and virtual options through the Kaibab National Forest with forest jeep roads and Arizona Trail sections.

A Certified Route 66 centennial event on November 14, 2026 offering a 140 mile course and a new 100 mile CenturyRun across Arizona landscapes. Options include crewed solo entries and flexible relay teams with commemorative finishers items.