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Half marathons in St. Louis & Inner Suburbs (2026-27)

Updated November 7, 2026

4 half marathons are coming up in St. Louis & Inner Suburbs in the next 90 days; the next is Saint Louis Track Club Half Marathon and 5K on Sunday, November 8 in Saint Louis. 14 half marathons are listed in St. Louis & Inner Suburbs for the next 12 months; the next one starts from $75.

All St. LouisSt. Louis & Inner Suburbs (14)West County & Chesterfield (9)St. Charles County (4)

• Sun8Nov

  Saint Louis Track Club Half Marathon and 5K

  Sun Nov 8 · 7:30 AM · Saint Louis · St. Louis & Inner Suburbs

  5KHalf marathon

  from $75Sign up ↗
• Sat21Nov

  Go Girl Run | St. Louis

  Fri Nov 20 – Sat Nov 21 · 8:00 AM · St Louis · St. Louis & Inner Suburbs

  1 mile · Fri5KHalf marathon

  from $20Sign up ↗
• Sat12Dec

  St. Louis Track Club 2026-2027 Frostbite Series

  Sat Dec 12 · 8:00 AM · Saint Louis · St. Louis & Inner Suburbs

  3K2 miles · Dec 265K · Jan 94 miles · Jan 2312K15K · Feb 6

  from $20Goes up Dec 6Sign up ↗
• Sun3Jan

  ShITR - Shivery Icy Trail Run - 1 Mile | 5K | 10K | Half Marathon

  Sun Jan 3 · 8:00 AM · Saint Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathonTrail

  from $25Goes up Nov 15Sign up ↗
• Sat13Feb

  Running From Yeti - St. Louis, MO

  Sat Feb 13 · 8:05 AM · St. Louis · St. Louis & Inner Suburbs

  5K10K9.3 milesHalf marathon

  from $50Goes up Jan 1Sign up ↗
• Sun7Mar

  Time to Paddy 5K/10K & Lucky 13.1 - St Louis

  Sun Mar 7 · 8:00 AM · St Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $22Goes up Nov 10Sign up ↗
• Sat3Apr

  St. Louis Marathon

  Sat Apr 3 · 7:00 AM · St. Louis · St. Louis & Inner Suburbs

  1 mileHalf marathonMarathon

  from $25Goes up Dec 1Sign up ↗
• Sat3Apr

  Students on the GO!

  Sat Apr 3 · 7:00 AM · Saint Louis · St. Louis & Inner Suburbs

  Half marathon

  from $50Goes up Feb 6Sign up ↗
• Sun2May

  Hometown Half Marathon/5K/10K - St Louis

  Sun May 2 · 7:00 AM · St Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $22Goes up Jan 5Sign up ↗
• Sat31Jul

  Heatwave Half Marathon/5K/10K - St. Louis

  Sat Jul 31 · 7:00 AM · St. Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $22Goes up Feb 2Sign up ↗
• Sat14Aug

  Swifty Fun Run - 1 Mile | 5K | 10K | Half Marathon

  Sat Aug 14 · 7:00 AM · Saint Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $20Goes up Mar 15Sign up ↗
• Sat4Sep

  The Labor Day Slay 5K-10K-10K-Ruck & Half Marathon

  Sat Sep 4 · 7:30 AM · St Louis · St. Louis & Inner Suburbs

  5K10KHalf marathonTrail

  from $39Goes up Jul 29Sign up ↗
• Sat2Oct

  Golden Harvest Half Marathon & 5K/10K - St. Louis

  Sat Oct 2 · 8:00 AM · St. Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $22Goes up Apr 6Sign up ↗
• Sat23Oct

  Spooky Sprint - St. Louis

  Sat Oct 23 · 9:00 AM · St. Louis · St. Louis & Inner Suburbs

  1 mile5K10KHalf marathon

  from $22Goes up Apr 27Sign up ↗

Picking a goal time? Work out your half marathon pace and splits →

Quick answers

How many half marathons are in St. Louis & Inner Suburbs in the next 3 months?

4 half marathons are listed in St. Louis & Inner Suburbs between November 7 and February 5. The next is Saint Louis Track Club Half Marathon and 5K on Sunday, November 8 in Saint Louis.

What is the cheapest half marathon in St. Louis & Inner Suburbs right now?

Go Girl Run | St. Louis on November 21 has the lowest listed entry fee in the next 90 days: $20. Prices are before the registration platform's processing fee.

When does the next early-bird price end for half marathons in St. Louis & Inner Suburbs?

Time to Paddy 5K/10K & Lucky 13.1 - St Louis: the Half marathon goes from $56 to $62 after November 10. 11 more of these half marathons publish a later price increase.

Are there half marathons in St. Louis & Inner Suburbs this weekend?

Yes, 1: Saint Louis Track Club Half Marathon and 5K (Sun).