About This Race
The Bristow Loop Race offers runners the rare opportunity to test their limits on their own terms. Set in Oregon's Elijah Bristow State Park, this timed loop format lets runners choose their challenge: 24 hours, 12-hour day, 12-hour night, or 6 hours. The 1.05-mile loop through almost entirely dirt trails is refreshingly flat, with just 16 feet of elevation gain per lap, making it accessible to runners of all abilities while still providing a serious endurance test. What sets Bristow apart is its welcoming, pressure-free atmosphere. There are no cutoffs, no mandatory gear requirements, and runners can pace themselves however they choose. The single aid station setup makes crewing optional, though many runners enjoy having support. The race has built a reputation for community support, including the Pride at Bristow celebration that welcomes LGBTQ+ runners and crew. For many, Bristow serves as an introduction to ultra running or nighttime racing. The 12-hour night option, running from 8 PM to 8 AM, provides excellent practice for longer events. Runners who complete 100 miles earn a coveted buckle, but the real achievement is discovering what lies within when the only opponent is time itself.
The course follows a 1.05-mile loop through Elijah Bristow State Park on predominantly dirt trails with a brief paved section near the aid station and timing area. With only 16 feet of elevation gain per loop, the terrain is remarkably flat and fast. Runners share some sections with equestrian trails, adding a unique element to the experience.
The single-loop format means runners pass the centrally located aid station and timing area every lap, making navigation simple and support easily accessible. The course winds through mixed terrain within the state park, offering enough variety to keep the scenery interesting despite the repetitive nature of loop racing.
Aid Stations
1 stations along the course
Main Aid Station
water, electrolyte, gels, PB&J, chips, pickles, gummy bears, fruit, hot food
Available every loop with extensive food options including hot meals ordered ahead
Race History
2025 Results
Practical Info
Early June in western Oregon typically brings mild temperatures with morning lows in the 40s-50s°F and daytime highs in the 60s-70s°F. Occasional light rain is possible.
EUG - Eugene Airport
Camping is available at the race site the night before. Eugene, Oregon is 30 minutes away and offers full lodging options. Limited RV/trailer parking at the venue.
Best For
Notable Features
The Bristow Loop Race stands out for its inclusive, no-pressure approach to ultra running. The timed format allows runners to set personal goals without cutoff anxiety, while the single aid station every 1.05 miles provides exceptional support. The addition of a 12-hour night option gives runners valuable experience with overnight running. The race's commitment to community inclusivity, particularly through Pride at Bristow, creates a welcoming environment for all runners.