Missouri Triathlon Calendar 2025-2026

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Explore the best triathlons in Missouri for 2025-2026! Our updated list features 153 exciting races across the region. Find your next race in Missouri below and join the running community at these great events!

April 2026
Apr
11
Saturday

Greater St. Louis Marathon

5 km 10 km 13 mi 26 mi
Apr
11
Saturday

Double Chubb 50K

Trail Run 8 mi 25 km 50 km
Apr
18
Saturday

Rocking to the Rocker

4 mi
Apr
19
Sunday

Dogwood-Azalea Festival 5k

5 km
Apr
25
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
May 2026
May
2
Saturday

The Ozark's Mountain Challenge

Trail Run 17 mi
May
2
Saturday

Lake Of The Ozarks Endurance Runs

Trail Run 5 mi 25 km 32 mi
May
2
Saturday

The Bluffs Trail Runs

Trail Run 5 km 10 km ... 13 mi 26 mi
May
16
Saturday

The Spring Sprung Half Marathon

5 km 10 km 13 mi
May
16
Saturday

Washington Police Explorers Post 2438 5k Run

5 km
May
25
Monday

The Remembrance Run/Walk 5k

5 km
June 2026
Jun
7
Sunday

Baby Shippey

Trail Run 10 km 13 mi
Jun
13
Saturday

Longest Day 5k Run/Walk

5 km
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