50K Races Near Boulder, CO
As of October 6, 2026, Crewable lists 6 upcoming 50K races near Boulder, CO from October 2026 to September 2027. The next is Indian Creek Trail Runs on October 17 in Sedalia, CO. Registration is open for 2. One advertises prize money.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
1 raceNovember 2026
1 raceDecember 2026
1 raceMay 2027
1 raceAugust 2027
1 raceSeptember 2027
1 raceQuick answers
What is the next 50K race near Boulder, CO?
Indian Creek Trail Runs, on Saturday, October 17, 2026, in Sedalia, CO. Distances: 50 mi, 55K, 15 mi.
What is the closest 50K race to Boulder?
Mountain Peacock 50k in Golden, CO, about 18 miles from Boulder, on November 15, 2026.
How many 50K races near Boulder, CO have open registration?
2 of the 6 list registration as open as of October 6, 2026, including Indian Creek Trail Runs and Sawmill Trail Runs.
Which 50K races near Boulder, CO offer prize money?
One race advertises prize money.
What is the busiest month for 50K races near Boulder, CO?
October 2026, with 1 of the 6. November 2026 follows with 1.
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