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Boulder Rez Marathon

Name: Boulder Rez Marathon
Start: 2026-08-15
End: 2026-08-15
Location: Boulder

Boulder, United States • 15 Aug 2026

Boulder Rez Marathon

The Boulder Rez Marathon takes place at Boulder Reservoir in Boulder, Colorado, on August 15, 2026. The running course follows the shoreline of the reservoir and remains mostly on dirt roads and trails. The course is described as flat with only about 200 feet of elevation gain and provides views of the Boulder Reservoir and the Rocky Mountains.

The event offers several distance options and relay entries. Distances available include:

Marathon
3/4 Marathon
Half Marathon
10K
Marathon relay captain entry
Marathon relay member entry

The event program notes packet pick up and registration and awards for each distance. The stated venue address is Boulder Reservoir, Boulder, Colorado 80301. Visit the organization's website for the most recent information.

United States Colorado Boulder

Race information

Website Registration

26 mi

Marathon

26 mi

Marathon Relay

20 mi

3/4 Marathon

13 mi

Half Marathon

10 km

10k Run

Visit the organization's website for the most recent information.

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