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Bolder Boulder 10K is a 10k running event held in Boulder, CO on May 25, 2026. It draws 50,000 competitors. The race features a $25K prize purse. The course features rolling hills.
Trehko tracks registration status, entry fees, and deadlines for Bolder Boulder 10K and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
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