Longmont's only Half Marathon - now offered in the cooler month of MAY! Join the Half Marathon or 5k distance! Walkers and Runners of all abilities welcome!
May 02, 2027
Distance — 21.1K
Type — Running
07:30
$64.00
May 02, 2027
Distance — 5K
Type — Running
08:30
$39.00
These values represent the 3-year monthly averages for May in Longmont.
Learn more about the host city, Longmont.
Longmont is a city of about 100,000 in North Central Colorado. The city lies in Boulder and Weld counties 30 miles (48 km) north-northwest of the Denver.
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Watch highlights and course previews from previous years.
Read what other athletes have to say about their experience at the Longmont Half & 5k (LM Half).
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location_on Longmont, Colorado, US
calendar_today Nov 07, 2026
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