Run Boulderthon: The Boulder Marathon
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Run Boulderthon: The Boulder Marathon
Run Boulderthon is a multi-distance road race series held in Boulder, Colorado, set in a valley at the foothills of the Rocky Mountains. The event date listed is 9.27.26. The series is USATF sanctioned, designated as Boston Marathon qualifying, and measured by a Level A USATF course measurer.
Race formats in the series include:
- Marathon
- Half Marathon
- 10K
- 5K
- Kids Run
The half marathon route has started at Boulder Reservoir and runs along the foothills into downtown Boulder, finishing on the Pearl Street Mall. Organizers stage an expo, gear check, pace groups, plentiful aid stations, course entertainment, and an after party. In recent years the event drew over 15,000 participants from all 50 states and multiple countries, and organizers have implemented a participant cap after years of growth. Presenting partners include lululemon, and participants receive a choice of a lululemon long sleeve top.
The event has received recognition from national outlets including USA Today, Runner's World, Active, and others. Post-race feedback noted the downtown finish and course views as frequent reasons runners recommend the event. Visit the organization's website for the most recent information.
