The Great GO! St. Louis Halloween Race features a half marathon, 10K, 5K and 1-mile fun run – with a special Halloween twist! This event attracts many of the region’s elite runners, along with thousands of runners and walkers of all ages and abilities.

The Halloween fun starts with the Trick-or-Treat 5K, a course lined with not only your usual water stops but also candy stops for you to trick or treat along the way! The 10K and half marathon courses have some added adventure as well including a Zombie Zone and even the Ghostbusters!

Date: October 20, 2019
Start time: 7:00am (5K), 7:30am (10K, half marathon)
Fun Run Start time: 9:30am


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Upcoming Events

  • GO! Missouri KT82 Trail Relay –
    September 14, 2019

    The GO! Missouri KT82 is an exciting one day, 82-mile trail relay that starts in St. Louis County and finishes in Hermann, MO. This race utilizes the scenic Katy Trail and concludes with a finish line celebration in the heart of wine country.
  • The Great GO! St. Louis Halloween Race – October 20, 2019
    The Great GO! St. Louis Halloween Race includes a half marathon, 10K, 5K and 1-mile fun run – with a special Halloween twist! This race promises to be the most festive in St. Louis! Hurry, as this race is limited to the first 5,000 registrants!
  • GO! St. Louis Marathon & Family Fitness Weekend – 2020
    The GO! St. Louis Marathon & Family Fitness Weekend is a signature event for GO! St. Louis and attracts over 25,000 participants in 11 races. The Marathon Weekend features races for participants of all ages and fitness abilities.

GO! St. Louis Challenges

GO! St. Louis is giving runners an opportunity to participate in our races in a new and challenging way. This is your chance to:

  • Commit to being a part of GO! St. Louis events year-round
  • Lock-in low pricing on all of our races with one payment
  • Get some awesome swag just for challenge participants

Check out all of the different
GO! St. Louis Challenges

Videos and Photos

Click on the video frame above to view our featured video — 2015 GO! St. Louis Marathon Weekend. You can also check out videos and photo libraries from every one of our events by clicking on the icons below.


GO! St. Louis is committed to fighting the rising rate of youth obesity and keeping St. Louis healthy and fit. Our unique youth programs have quickly gained national recognition and focus on developing physical fitness skills, nutrition tips, and training tools to encourage students of all ages to lead a healthy lifestyle. We offer two programs, which encourage students beginning in kindergarten through high school the opportunity participate.
The GO! St. Louis Read, Right, & Run Marathon® (RRRM) was launched in 2001 and quickly gained national recognition. The program’s goal is to develop reading-proficient, community-minded and physically fit children in grades K-8 by challenging them to READ 26 books, RIGHT the community with 26 good deeds, and RUN 26.2 miles over a 26 week period. It is a standards-based, sustainable, enrichment program that endorses and supports existing school curriculum.
Students on the GO! is a team-based program to engage high school students in an active and healthy lifestyle year-round. Students train to run the GO! St. Louis Half Marathon each April. Students embark on a personal journey of self-discovery where they explore and experience the lifelong benefits of a comprehensive health and fitness program.