Mon
31
May
2027
EventsFind this location on a map
USARunningRoad10K · 10 km / 6.2 mi5K · 5 km / 3.1 miHalf · 21.1 km / 13.1 miMarathon · 42.2 km / 26.2 mi
Boulder Marathon
Boulder, Colorado · USA
No future date listed
About Boulder Marathon
Boulder Marathon is a running event in Boulder, Colorado, United States. Recorded disciplines include 10K, 5K, half marathon, Marathon. The listed surface is road. The listed organiser is Boulder Marathon. No future date is currently listed on ATHRECS. The ATHRECS archive includes editions from 2026. This describes the editions recorded here, not the event's founding date or complete history.
Dates, starts & entry
Times are local to the race. Select the entry route for your distance.
The next date has not been announced here. Check the race website for updates.
Location & race day
Listed venue / area
Boulder, ColoradoUSA
Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.
About the race
Boulder Marathon is Sunday 27 September 2026.
- Surface:
- Road
- Organiser:
- Boulder Marathon
Results
Public-figure or athlete-approved ATHRECS results, plus verified organiser links.
No verified results links have been added yet.
Past races
Marathon · 42.2 km / 26.2 miFinished
Sun, 27 Sept 2026
Marathon event.
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Fri
16
Oct
2026
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