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Spring 2027

Spring Half Marathons in Missouri

29 spring half marathons in Missouri from March to May 2027. Race days typically run from 46°F at dawn to 67°F in the afternoon. A typical entry fee is $59. Dates and fees come straight from race registration and refresh every night.

29
spring half marathons
12
cities
67°F
typical race-day high
$59
typical entry fee

March 2027

April 2027

May 2027

Quick answers

When are spring half marathons in Missouri?
The season runs March to May. The busiest month is March, with 10 of the 29 races listed here; April has 10 and May has 9.
What is the weather like for spring half marathons in Missouri?
Across 27 of these races, race day typically runs from about 46°F at dawn to 67°F in the afternoon, with rain on about 29 percent of days. Most start early, close to the low.
Which spring half marathons in Missouri are fastest?
By median finish time in their latest results: Time to Paddy 5K/10K & Lucky 13.1 - Kansas City (2:00:02), Rock The Parkway Half Marathon and 5k (2:05:38), and Time to Paddy 5K/10K & Lucky 13.1 - St Louis (2:06:30). A fast median usually means a flat course, cool weather, and a competitive field.
How much does a spring half marathon cost?
Current entry fees in Missouri usually run from $45 to $70, with a typical fee of $59 before processing fees. Most raise prices as race day nears.