2026 Go! St. Louis Halloween 10K/5K/Fun Run
St. Louis's Halloween half marathon draws ~590 costumed runners from 25 states for a spirited fall race.
Race Date
Oct 24, 2026
Location
Saint Louis, MO
Quick facts
- Date
- Saturday, October 24, 2026
- Location
- Saint Louis, Missouri
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
Highlights
Good For
The Experience
The Great GO! St. Louis Halloween Race turns the suburban streets of Eureka, Missouri, into a costumed celebration every fall. Runners of all paces tackle the half marathon, 10K, or 5K, with plenty of family fun in the 1-mile event. The Halloween twist — think ghouls, goblins, and creative costumes — gives the race a festive, community feel.
Now in its 13th edition, the event attracts roughly 563 finishers from about 25 states, with a loyal 22% returning each year. The field may be intimate, but the energy is high as participants race through the autumn landscape of this St. Louis suburb.
Post-race, runners enjoy a lively Halloween party atmosphere, complete with awards and treats. Whether you're chasing a personal best or just soaking up the seasonal fun, this race offers a unique blend of competition and holiday spirit.
Race-provided description
The Great GO! Halloween Race Saturday 10.24.26 - Sunday 10.25.26
Eureka, Missouri
Register Today! (https://runsignup.com/Race/MO/SaintLouis/TheGreatGOStLouisHalloweenRace)
Race day count down
Get fueled by ghouls — join us for the Great GO! St. Louis Halloween Race!
The Great GO! St. Louis Halloween Race offers a half marathon, 10K, 5K, and 1-mile fun run with a Halloween twist. It’s a must-attend fall event for serious runners and families alike, whether you’re aiming for a personal best or just enjoying the festive atmosphere! Good luck and happy haunts!
Race Weekend Information
Parking (http://gostlouis.org/parking)
Street Closures (http://gostlouis.org/streets)
Packet Pickup (https://gostlouis.org/races/the-great-go-halloween-race/#race-weekend)
Results (https://www.athlinks.com/event/24026/results/Event/1125611/Results)
[image: https://gostlouis.org/wp-content/uploads/2024/03/HalloweenRace_lg-1920x1039.jpg][image: https://gostlouis.org/wp-content/uploads/2024/03/Hallowe
Course Info
Course Type
Loop Course
Terrain
road
Scenery
Small Town
Difficulty
Rolling Hills
Quality Score
Standout8013 years running
~590 finishers a year
shrinking
22% returning runners
8 photos
runners from 25 states
winner 0:37:55
typical high 70°F
Race Day Weather
5-year historical avgStart (Low)
52°
Afternoon (High)
70°
Pleasant conditions — light layers at start, comfortable by finish
0.2"
Precipitation
12 mph
Wind
69%
Humidity
Race Photos
Frequently asked
When is the 2026 Go! St. Louis Halloween 10K/5K/Fun Run?
The 2026 Go! St. Louis Halloween 10K/5K/Fun Run was held on Saturday, October 24, 2026.
Where does the 2026 Go! St. Louis Halloween 10K/5K/Fun Run take place?
It takes place in Saint Louis, Missouri.
What distances does the 2026 Go! St. Louis Halloween 10K/5K/Fun Run offer?
The half marathon (13.1 miles).
Is the 2026 Go! St. Louis Halloween 10K/5K/Fun Run course flat and good for a PR?
The 2026 Go! St. Louis Halloween 10K/5K/Fun Run is a rolling hills, loop course course.
HalfRuns editorial — independent, no paid placement.
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