Missouri Half Marathon Calendar 2025-2026

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Explore the best half marathons in Missouri for 2025-2026! Our updated list features 48 exciting races across the region. Find your next race in Missouri below and join the running community at these great events!

August 2025
Aug
2
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
Aug
9
Saturday

Swifty Fun Run - St. Louis

5 km 10 km 13 mi
Aug
16
Saturday

3 Legged Monster Race

Trail Run 7 mi 12 mi 13 mi
Aug
30
Saturday

Corps of Discovery Trail Races

Trail Run 5 mi 8 mi 13 mi
Aug
30
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
September 2025
Sep
7
Sunday

Lap the Lake Race Series

5 km 10 mi 13 mi
Sep
13
Saturday

Rockin' Rockwoods 53K and 1/2 Marathon

Trail Run 13 mi 53 km
Sep
13
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
Sep
21
Sunday

Spooky Sprint - Springfield

5 km 10 km 13 mi
Sep
27
Saturday

Swifty Fun Run - Kansas City

5 km 10 km 13 mi
Sep
27
Saturday

St. Joseph Missouri Marathon

5 km 10 km 13 mi 26 mi
Sep
27
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
October 2025
Oct
4
Saturday

Flats Trail Half Marathon

Trail Run 13 mi
Oct
4
Saturday

Frog Hill Half Marathon

Trail Run 5 km 10 km 21 km
Oct
4
Saturday

Devil's Toll Race

Trail Run 13 mi
Oct
4
Saturday

The Best Races - Kansas City

5 km 10 km 13 mi
Oct
5
Sunday

Mo' Cowbell Marathon

5 km 10 km 13 mi 26 mi
Oct
18
Saturday

Kansas City Marathon

5 km 10 km 13 mi 26 mi
Oct
18-19
Sa - Su

The Great St. Louis Halloween Race

5 km 10 km 13 mi
Oct
18-19
Sa - Su

I-35 Challenge

13 mi 26 mi
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