Gila 100

Event Overview

Course & Terrain

Double out-and-back from Open Space Brewing in Santa Clara: through Bataan Park and historic Fort Bayard, up the Fort Bayard trail network to the Continental Divide Trail, and along the CDT to the Sapillo Campground turnaround, then back. The 100-mile race repeats the whole route. Singletrack, rocky jeep trails and dirt roads.

Key course features to know before comparing this race:

• Historic Fort Bayard in the opening miles
• The steepest, most technical climb, toward Twin Sisters, to reach the Continental Divide Trail
• CDT ridgeline past Black Peak and Signal Peak toward the Mimbres Valley
• Sapillo Campground turnaround at miles 27.5 and 81.5

The organizer warns that October days can reach the 80s °F and nights can drop below freezing, with rain, wind, hail or snow possible.

Entry & Logistics

Why This Race Matters

Gila Adventure Runs bills the race as the only 100-mile trail race in the Gila National Forest, which it describes as the world's first designated wilderness area (1924). 2026 is the third edition. The organizer names weather, with days in the 80s °F and nights near freezing, as the main cause of the race's high DNF rate.

Preparing for a Race Like Gila 100

The 100-mile race guide covers the format as a whole. These guides go deeper:

• Walking strategy for ultramarathons: When and how to walk by terrain, effort and cutoffs.
• Crew and aid-station strategy: Crew tables, aid stops, drop bags and runner preferences.
• Gut training for ultrarunners: A six-week practice sequence for race-day fueling.
• Tapering for ultramarathons: Plan the taper and race week around your own recovery.

Planning Notes

• Treat intermediate cutoff gates as part of the course. Build enough margin for aid stops and late-race slowdown, and verify every current gate in the official rules.
• Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
• The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
• The website and the August 2026 runners manual give different second-lap cutoffs and mileages for Aztec (10:30 or 11:00 AM Sunday) and Signal Peak (1:30 or 2:00 PM Sunday). Check at the briefing.
• The website says there is no mandatory gear, but the runners manual requires 1 liter of water capacity, a headlamp with backup light, a whistle and the course GPX downloaded to a watch or phone.
• 100-mile runners can drop to the 50-mile only at the Start/Finish at halfway. Stopping later on the second lap is a DNF, and drops cannot win 50-mile podium awards.
• Cell service is spotty and absent in most canyon bottoms. Black bears, mountain lions and rattlesnakes live in the Gila.

Related Preparation

• Compare verified US 100-mile races
• Compare this race in the full 2026 calendar
• Open the 100-Mile format guide
• Open the Fixed-Distance format guide
• Compare all race formats
• Use the timed-race pace calculator
• Plan checkpoint arrivals and cutoff buffers
• Build a crew and drop-bag plan
• Build a race-specific gear checklist