Boulder Rez Half Marathon

Schedule

Sat Apr 11 2026 at 08:00 am to 11:30 am

UTC-06:00

Location

Boulder Reservoir | Boulder, CO

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Join us on 11 April. This beautiful spectator-friendly Half Marathon, 10K and 5K course attracts athletes from all over the west due to its phenomenal scenery, glamorous finisher medals, perfect running temperatures, and awesome post-race party.

The run course loops around the Boulder Reservoir and remains mostly on dirt trails. The course is flat with only 200 feet of elevation gain. You will experience iconic views of the mountain range to the west.
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Where is it happening?

Boulder Reservoir, Boulder, United States

Event Location & Nearby Stays:

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