In 156 days · Sat, Mar 13, 2027
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Saturday, March 13th, 2027
Chesterfield First Community Athletic Complex, Chesterfield MO
5K · 10K · 1 Mile
37–57°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2026
43–61°F
dry
2025
49–76°F
dry
2024
52–76°F
rain
2023
27–37°F
dry
2022
27–63°F
dry
2021
45–57°F
dry
2020
38–49°F
dry
2019
44–69°F
rain
2018
28–46°F
dry
2017
31–40°F
rain
Best months to race in Missouri →
Race-day forecast says layers
37°F at the start.
Gloves, ear warmers, throwaway layers, hand warmers — delivered before race day.
About this race
The City of Chesterfield's Annual Shamrock Run will take place on March 13, 2027, at the Chesterfield First Community Athletic Complex. The race will consist of a 5K or 10K race, as well as a Fun Run Race for kids! The 5k and 10K will begin at 8:30am and the Fun Run will begin at 10am. Each participant will receive a shirt if registered by February 21. First place in age category will receive a medal for 5K and 10K. Fun Run racers are all guaranteed medals.
SHAMROCK FEES:5K/10K:
$25 Early Bird - through February 14
$35 February 15 – March 12
$45 Race Day
LIL’ LEPRECHAUN RUN:
$15 through Race Day
Friday, March 12, 10:30am-6:30pm
Dick's Sporting Goods 64 Thf Blvd Chesterfield MO 63005
Race day packet pick up will be from 7:30am until the start of the race. Race starts at 8:30am!
Chesterfield First Community Athletic Complex, Race Location
Course map
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Run clubs near Chesterfield to train with before race day.
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