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Triathlon Calendar near Centennial 2025-2026

Explore the top triathlons near Centennial for 2025-2026! We've gathered 100 exciting races in the area. Check out our detailed list below to find your next local race.

August 2025
Aug
23
Saturday

Staunton Rocks

Trail Run 13 mi 26 mi
Aug
30
Saturday

The Best Races - Aurora

5 km 10 km 13 mi
Aug
30
Saturday

Rock Hawk Trail Races

Trail Run 5 km 10 km 25 km 50 km
September 2025
Sep
1
Monday

Labor Day Half Marathon

5 km 10 km 13 mi
Sep
6
Saturday

HRCA Wildcat Mountain Trail Race

Trail Run 10 km 10 mi
Sep
6
Saturday

SheSprints - Women's Triathlon

Triathlon
Sep
7
Sunday

Denver Rocks Run 10K

5 km 10 km
Sep
7
Sunday

Conservation Colorado 5k

5 km
Sep
7
Sunday

RMRR Trophy Series

5 km 10 km
Sep
13
Saturday

All-Out Fall Fest

5 km 10 km 13 mi
Sep
13
Saturday

The Denver 5k

5 km
Sep
13
Saturday

Parker Parks and Recreation so Long to Summer

5 km 10 km
Sep
13
Saturday

So Long to Summer 10K

5 km 10 km
Sep
13
Saturday

The Best Races - Aurora

5 km 10 km 13 mi
Sep
13
Saturday

RiNo 5K

5 km
Sep
14
Sunday

Spooky Sprint - Denver

5 km 10 km 13 mi
Sep
14
Sunday

Nun Run

5 km 13 mi
Sep
20
Saturday

Miles 4 Madison 5K

5 km
Sep
20
Saturday

Battle by the Brook

6 mi 20 mi
Sep
21
Sunday

Farmers 5000

5 km
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