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This month
7SUN
7
JUN
Colorado 13er (Half Marathon/10k/5k)
Louisville, US
SUN
7
JUN
The Big Run Presented by Brooks
Denver, US
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5k Race : Summer Sizzle : June
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The Hundo and The Hundito
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Sam's Rainbow Run
Fort Collins, US
Colorado 13er (Half Marathon/10k/5k)
Sunday, June 7, 2026 · Louisville, United States
Distances
5K
10K
Half
Start location
About this race
The Colorado 13er offers a blend of trail and road running on a looped course with 9 miles of flat, crushed gravel. Runners will enjoy views of the Flatirons. It is suitable for all levels of runners.