Endurance Grid lists 21 races in Boise, Idaho, from October 2026 to August 2027.
The Boise race calendar is busiest in October, April, and November. It covers a range of endurance sports — you'll find races in Running, Duathlon, and Triathlon — so there's usually a race near you. Distances span a wide range across those sports; you'll see 5K, 1 Mile, Half Marathon, 10K, and Marathon, 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
235,701
as of 2023
City Elevation
2,866 ft
Nearest Airport
BOI
Boise Air Terminal/Gowen Field
Time Zone
Mountain Time
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Explore and filter upcoming endurance races in Boise, Idaho on the map below — by sport, distance, price, or month.