Course & Elevation
The Bolder Boulder courses from the University of Colorado campus down Flagstaff Road with scenic mountain views of the Flatirons, then through downtown Boulder with its iconic Pearl Street Mall finish. The race features a net downhill elevation profile with rolling terrain through residential neighborhoods and parks.
Course Facts
Distance 21.0975 km
Elevation Gain 287 m
Surface road
Profile Rolling
Weather on Race Day
18°C
Temperature
45%
Humidity
15%
Rain Chance
Late May in Boulder offers pleasant spring weather with cool mornings and mild afternoons. Altitude of 5,430 feet can affect sea-level runners during acclimatization.
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