Boulderthon Half Marathon is expected to sell out. Over 4,000 runners are expected at this year’s Boulderthon from 50 states and 13 countries, with registrations coming in over 2x the rate of last year. 5k, 10k, Full Marathon are Nearing Capacity. Register today.

THE SIGNATURE BOULDER MARATHON
WITH A DOWNTOWN FINISH

10.8.22 - 10.9.22

REGISTER NOW
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People gathered at the starting point of the Boulder marathon and texts like
'spectacular' and 'epic' written on the foreground
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Finish line of the Boulderthon run with text overlay saying 'best Colorado
races'
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Aerial view of a park in Boulder with text overlay saying 'run a marathon in the
happiest city in America'
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aerial view of a road in the middle of the foothills with text overlay saying 'the
signature city marathon that Boulder deserves'
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arerial view of the city at the foothills with text overlay saying 'set at the
foothills of the rockies'
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aerial view of the city at the foot of the mountains with text overlay saying '3+
years in the making'
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aerial view of the Folsom Field stadium with a text overlay saying 'join the
Boulder community'
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aerial view of the city at the foothills with text overlay saying 'for the first time
in history, an epic downtown finish'
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aerial view of a road in the middle of the foothills with a text overlay that says
'feel on top of the world'