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The Colorado Marathon

Name: The Colorado Marathon
Start: 2026-05-03
End: 2026-05-03
Location: Fort Collins, Colorado

location_city Fort Collins

location_on Colorado

flag United States

calendar_today 03 May, 2026

directions_run Running

language Official Website

About the Event

Join us for the Colorado Marathon in Fort Collins this May! Our annual event takes place in the stunning Poudre Canyon and the gorgeous natural areas of Fort Collins in Northern Colorado.

Each year, thousands of runners participate in this incredible event to test their endurance, push themselves to new heights, set new PRs, and race alongside other running enthusiasts who share a passion for health and fitness. Many even run Colorado’s fastest race to qualify for the Boston Marathon! Regardless of why you join us at this momentous event, we’re happy to have you!

With one of the most scenic downhill courses in the state, four different distances to choose from, and a vibrant community-centric atmosphere, this is one race you don’t want to miss. But be quick! Our event sells out quickly, so register early to save your spot in the race. Keep reading to learn all the details about this thrilling running adventure!

Note: Once a race reaches capacity, a limited number of entries are reserved for the "Charity Fund." These entries are double the price and all proceeds go to local charities and non-profits that are involved in the race. Once we hit the Charity Fund entries, this is the only way to register for that distance. Once the limited number of Charity Fund entries are sold, the race will be officially sold out and registration for that distance will be closed.

You will be able to register or change distances at the expo on Friday or Saturday of race weekend. However, if a race has reached capacity, there will be no new registration or changes to that distance.

Questions? Visit our website for more information here.

Races Offered

5K

May 03, 2026

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Distance — 5K

terrain

Type — Road running

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123 days remaining

10K

May 03, 2026

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Distance — 10K

terrain

Type — Road running

timer

123 days remaining

Half-Marathon

May 03, 2026

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Distance — Half-Marathon

terrain

Type — Road running

timer

123 days remaining

Marathon

May 03, 2026

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Distance — Marathon

terrain

Type — Road running

timer

123 days remaining

Weather Overview

These values represent the 3-year monthly averages for May in Fort Collins.

Temp (°C)

Feels Like (°C)

thermostat 6.7° / 21.8°

wb_sunny 3.4° / 18.0°

Wind (km/h)

Humidity (%)

air 9.9 /

water_drop 54.2%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 6.7° / 21.8°

wb_sunny 3.4° / 18.0°

air 9.9 km/h

water_drop 54.2%

About Fort Collins

Fort Collins is a city of about 170,000 in north central region of the western U.S. state of Colorado. The seat of Larimer County, the city lies 59 miles (95 km) north of Denver on the Cache La Poudre River at the eastern edge of the Front Range foothills. Fort Collins is the home of Colorado State University and is a major research center.