In 4 days · Sat, Oct 24, 2026
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Saturday, October 24th, 2026
5029 Northrup Ave, St. Louis MO
Half · 10K · 5K · 1 Mile
47–64°F · some rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
40–62°F
dry
2024
44–71°F
dry
2023
60–73°F
dry
2022
65–74°F
dry
2021
55–78°F
rain
2020
42–52°F
dry
2019
47–60°F
rain
2018
37–58°F
dry
2017
49–55°F
dry
2016
49–65°F
dry
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Race-day forecast · Saturday, Oct 24
Cloudy · 59–79°F
Saturday, Oct 24starts near 59°F · 0% chance of rain · wind up to 8 mph
About this race
The Great GO! St. Louis Halloween Race features a half marathon, 10K, 5K, 1-mile fun run and 1-mile costume dog walk – with a special Halloween twist! From the serious road racer to the family dressed head-to-toe in costume completing the race together, this is a can't-miss fall event!
Held in picturesque Eureka, MO and The Great GO! St. Louis Halloween Race will feature partnerships with local businesses, and of course - a top-quality race with all the great things you've come to expect from GO! St. Louis events!
In addition to our line-up of events, runners will be treated to great post-race amenities including plenty of candy (it IS Halloween, after all!), 4 Hands beer for the over 21-participants, and a great festival area in Eureka's business district! And don't forget to dress in costume - the Great GO! St. Louis Halloween Race Costume Contest will return this year!
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