The Great St. Louis Halloween Race

OCT
24
2026
A weekend Halloween-themed race in Eureka, Missouri offering a half marathon, 10K, 5K, 1-mile fun run and a costumed 1-mile dog walk, plus a costume contest, post-race treats and a Trick-or-Treat Village in Kircher Park.
Sat 24 Oct 2026
Half Marathon 10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

The Great GO! St. Louis Halloween Race

The Great GO! St. Louis Halloween Race is scheduled for October 24 and 25, 2026 in Eureka, Missouri, with activities centered at Kircher Park. The event spans a weekend of runs, a costumed dog walk, and a Trick-or-Treat Village hosted in the park. Organizers work with local businesses to provide post-race treats and beverage options for participants over 21.

Distances offered include:

  • Half marathon (13.1 miles)
  • 10K
  • 5K
  • 1-mile Fun Run
  • 1-mile costumed dog walk (Great PUPkin Run)

Costumes are encouraged and a Costume Contest is part of the weekend program. The Great PUPkin Run is a one-mile run/walk for pets and their humans; leashes are required and there is a Puppy Costume Contest with pup awards. Participants receive a premium long sleeve shirt, a festive finisher medal, a digital finisher certificate, and a post-race treat bag.

Race weekend logistics include packet pickup, parking information, and street closure notices. The event also partners with Open Door Animal Sanctuary and accepts donations to support the shelter. The course runs through areas of Eureka, Missouri, and course maps are provided for participants. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon
10 km
10k
5 km
Great Pupkin Run
1-Mile Fun Run
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.