Boulder Rez Marathon
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Event overview
The Boulder Rez Marathon is set for August 15, 2026 at Boulder Reservoir in Boulder, Colorado. The event offers multiple race distances and a marathon relay. The course is USATF sanctioned and is described as mostly on dirt roads and trails alongside Boulder Reservoir, with views of the reservoir and the Rocky Mountains. The route is relatively flat with about 200 feet of elevation gain. Participants receive a shirt and a finisher medal. Results are provided by the race organizers and courses are accurately measured and clearly marked.
Distances and awards
- 10K
- Half Marathon
- 3/4 Marathon
- Marathon
- Marathon Relay
Awards include overall top three male and female finishers and age-group awards for 19 & under, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, and 80+.
Packet pickup and volunteering
Packet pickup is available the day before the race at Fleet Feet Boulder (2775 Pearl, Boulder, CO) and on race day at the finish area in the Boulder Reservoir parking lot. Volunteers of all ages are welcome; volunteers under 13 must be accompanied by a parent or guardian during their shift. Visit the organization's website for the most recent information.
