Endurance Grid lists 16 races in Littleton, Colorado, from August 2026 to April 2027.
The race calendar
The Littleton race calendar is busiest in October, September, and November. It covers a range of endurance sports — you'll find races in Running, Trail Running, and Paddle — so there's usually a race near you. Distances span a wide range across those sports; you'll see 5K, 10K, 1 Mile, Half Marathon, and 1K, along with other popular distances.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
Population
45,092
as of 2023
City Elevation
5,445 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport
Time Zone
Mountain Time
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Explore and filter upcoming endurance races in Littleton, Colorado on the map below — by sport, distance, price, or month.
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