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! The 5K course will be 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! As you run through downtown St. Louis you will have to watch out for the Zombie Zone and you might even see the Ghostbusters in action!

The fun doesn’t end when the race is over! Get your  top of the line finisher’s medal, and head over to the Trick-or-Treat Village to fill up on candy and treats from local business and organizations. For the over-21 crowd, Schlafly will be on site to help you enjoy a post race brew.

This race promises to be the most festive in St. Louis! Hurry, as this race is limited to the first 5,000 registrants!

Date: October 2020
Location: Downtown St. Louis

  • 7:00AM: 5K Start
  • 7:30AM: 10K / Half Marathon Start
  • 9:30AM: 1-Mile Fun Run Starts

Trick or Treat Village hours: 7:00 a.m. to 11:00 a.m.

Registration Fees

Event 1/1/19 – 8/31/19 9/1/19 – 10/13/19 Race Week
10/14/19 – 10/20/19
Half Marathon $65 $70 $80
10k $40 $45 $50
5K $35 $40 $45
Adult 1-Mile Fun Run $20 $25 $30
Children’s 1-Mile Fun Run $10 $15 $20

Military Discount

We do offer a 25% entry fee discount for all active duty, veterans, guard members and reserve members, however this does not include family members or military spouses.  To receive a special discount code, please email us at or call 314-727-0800. Participants utilizing the military discount will be required to provide a military ID or papers during the packet pickup process. Discount applies to Half Marathon, 10K and 5K only.

Packet Pickup

Course Map

Packet pick-up for the Great GO! St. Louis Halloween Race will be at the following locations:

Pre-Race Packet Pickup

Wednesday 10/16, Thursday 10/17, and Friday 10/18
lululemon – Plaza Frontenac
1701 S Lindbergh Blvd
St. Louis, MO 63131

Saturday 10/19
GO! St. Louis Office
300 Hunter Ave
St. Louis, MO 63124

Race Day Packet Pickup

Sunday, October 20, 2018 – beginning at 6 AM
Downtown St. Louis race site

Street Closures

Many downtown streets will be closed on race morning for a period of time. Please check out the street closure listing HERE.

Costume Contest

As part of the festivities, we will have a costume contest for race participants. We encourage participants to get creative and dress in costume for the race. This is a family-friendly event so G-rated costumes only. Simply stop by the costume contest tent, located in Trick-or-Treat Village, between the hours of 7:00 am – 11:00 am. The finalists will be announced on the GO! St. Louis Facebook page the week following the race, with the GO! St. Louis community voting on the winners.

The costume categories include:

  • Youth – Individual
  • Youth – Group
  • Adult – Individual
  • Adult – Group


Have you run multiple GO! St. Louis races? Click HERE for more information on all of our Challenges, which include the Triple 5K Challenge, the 10K Challenge, and the Half Marathon Challenge!

Race Rules, Regulations & Race Bib Transfer

The most important thing is to have fun and enjoy your race, but we do have some basic rules that will ensure that things run smoothly. A reminder that participants with baby strollers or joggers will be allowed to participate in the 5K race and 1-Mile Fun Run Only. Participants utilizing strollers and joggers should start at the back of the 5K start line.

  • No strollers are allowed in the 10K or Half Marathon.
  • No pets (dogs), roller blades, skateboards, bikes, etc. are allowed in any of the races.
  • 5K and 10K age limit: 8 years of age or older
  • Half Marathon age limit: 14 years old of age or older

To ensure that you receive an accurate time make sure your race bib, which has the timing tag on the back (removal of timing strips will result in disqualification) is clearly visible on the front of your body. We will not have assigned start corrals, so we ask that you line up according to your pace per mile. If you plan to walk the race, please line up near the back of the start. Remember your timing chip does not start until you officially cross the start line.

Transferring of race bibs is not allowed in this race. While the practice of giving your race bib to someone else may seem harmless it can result in serious consequences to both parties involved. It’s an issue of false identity and a liability issue. Why? The most important reason is that your race bib is attached to your identity, so if an emergency occurs that requires medical attention or a race official must identify a participant, we need to have accurate information. In addition, finisher awards may be impacted. If race organizers identify an individual who has given their race bib to another person, it will result in disqualification and a minimum two-year ban for both individuals for any GO! St. Louis race.

Deferral Policy – Half Marathon Participants Only

If for a medical reason you are unable to participate in the Great GO! St. Louis Halloween Half Marathon, you have the option of deferring your entry to either the 2020 Marathon Weekend Half Marathon  or the 2021 Great GO! St. Louis Halloween Half Marathon with a note from a medical professional. This deferral is valid for 50% of the entry fee. The deferral is neither transferable to another person or another race and is non refundable. The deferral is only valid for one calendar year.

To defer you must contact the GO! St. Louis ( office by October 15, 2019.

Time Limits

GO! St. Louis is committed to providing the safest race course for our participants. We therefore set time limits to ensure that all runners are protected from vehicular traffic and have the aid station support they need to successfully complete the race.

The overall course pace is 14:52 minutes per mile, which will be strictly enforced. Any runner who falls behind this pace will be asked to move to the sidewalk and obey all traffic signals. If you choose to continue there will be no medical support, aid stations, or course monitors at intersections, and the course will no longer be marked. Participants after that time will not be guaranteed a finish time, medal, or finish line festivities.

  • Half Marathon: 3 hours, 15 minutes
  • 10K: 2 hours
  • 5K: 1 hour

Weather or Disaster Emergency

In the event of severe weather or a disaster that causes the event to be delayed, altered or canceled we encourage you to listen to the announcer at the start/finish line or race officials along the course for special instructions. The event will proceed rain or shine. No refunds will be issued for an event that is delayed, altered or canceled. Any pre-race weather or disaster related information will also be posted on our Facebook page and Twitter page.

Awards and Results

The first three finishers in each age group in the Half-Marathon, 10K and 5K receive a pumpkin pie as a special award. Visit the awards tent after the race to see if you are a winner.

Additionally, prize money is awarded to the top 3 male and female finishers in the 10K and Half Marathon events.

Past Results

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