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Half Marathons Found In St. Louis, Missouri

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Half Marathons in & near St. Louis, Missouri 2025 - 2026

The most comprehensive list of Half Marathons in and near St. Louis, Missouri in 2025 - 2026. Find your perfect race!

Race Calendar: Half Marathons Found In St. Louis, Missouri

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The "ROCKIN' RIVERFEST" 5k, 10K, Half Marathon & Fun Run!

St Charles, Missouri
05 Jul 25
$27.50 - $84.74
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The Bluffs Trail Runs

Eminence, Missouri
02 May 26
$16.90 - $117.60
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The SPRING SPRUNG 5k-10k and Half Marathon

Grover, Missouri
17 May 25
$52.94 - $105.94

Hospital Hill Run

Kansas City, Missouri
31 May 25
$48.70 - $138.80

"Run For A Vet"

Branson, Missouri
07 Jun 25
$32.80 - $43.40

Hometown Half Marathon & 5k/10k - Kansas City

Parkville, Missouri
14 Jun 25
$20.83 - $65.46

Love to Run St. Charles 5k | 10k | Half Marathon | Marathon (NEW!)

Saint Charles, Missouri
14 Jun 25
$9.07 - $103.01

Clinton Historic Half Marathon & 5K

Clinton, Missouri
14 Jun 25
$33.45 - $63.72

Hometown Half Marathon & 5k/10k - St Louis

St. Charles, Missouri
15 Jun 25
$20.83 - $65.46

The "ROCKIN' RIVERFEST" 5k, 10K, Half Marathon & Fun Run!

St Charles, Missouri
05 Jul 25
$27.50 - $84.74

Rock Island Trail Half Marathon and 5K

Pleasant Hill, Missouri
26 Jul 25
$32.45 - $43.95

Swifty Fun Run - 1 mile | 5k | 10k | 13.1 mile

Saint Louis, Missouri
09 Aug 25
$9.07 - $81.66

Corps of Discovery Trail Races

Saint Charles, Missouri
30 Aug 25
$60.31 - $81.66

Corn Cob Classic

Washington, Missouri
27 Sep 25
$28.00 - $70.40

Swifty Fun Run - Kansas City

Kansas City, Missouri
27 Sep 25
$9.07 - $76.33

City of Roses Half Marathon & 5K

Cape Girardeau, Missouri
28 Sep 25
$32.80 - $85.80

The Betsy Farris Memorial Run

Columbia, Missouri
04 Oct 25
$25.00 - $50.00

MO' Cowbell Marathon/Half-Marathon/10K/5K

Saint Charles, Missouri
05 Oct 25 - 30 Oct 25
$38.96 - $116.89

The Great GO! St. Louis Halloween Race

St. Louis, Missouri
18 Oct 25 - 19 Oct 25
$22.95 - $70.99

I-35 Challenge

Kansas City, Missouri
18 Oct 25 - 19 Oct 25
$38.10 - $293.95

Garmin Kansas City Marathon

Kansas City, Missouri
18 Oct 25
$48.70 - $133.50

Spooky Sprint - Kansas City

Lee's Summit, Missouri
25 Oct 25
$20.83 - $50.28

The Innsbrook Half Marathon & 10k

Innsbrook, Missouri
25 Oct 25
$49.64 - $70.99

Spooky Sprint- St. Louis

Maryland Heights, Missouri
26 Oct 25
$20.83 - $50.28

Honoring our Heroes Marathon

Rolla, Missouri
15 Nov 25
$33.63 - $188.41

Yeti Endurance Weekend

Kansas City, Missouri
15 Nov 25

The Stick Season Trail Run Series

Glencoe, Missouri
27 Dec 25 - 24 Jan 26
$52.94 - $211.94

The FROZEN STICK 5k, 10k, and Half Marathon Trail Run

Glencoe, Missouri
24 Jan 26
$42.34 - $74.14

RUN Liberty

Liberty, Missouri
28 Mar 26
$10.54 - $69.90

Bridge and Dam

Lake Ozark, Missouri
11 Apr 26
$54.00 - $107.00

Greater St. Louis Marathon

St. Louis, Missouri
11 Apr 26
$28.29 - $92.34

The SKIPPO Trail Race

Ballwin, Missouri
01 Nov 25 - 02 Nov 25
$53.91 - $116.89

The Bluffs Trail Runs

Eminence, Missouri
02 May 26
$16.90 - $117.60
Showing 1-31 of 31 results