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!
Races + Registration
The Great GO! St. Louis Halloween Race in Eureka, MO combines the thrill of a top-quality race with the charm of the picturesque town. Half marathon, 10K, 5K, 1-mile fun run, and 1-mile costumed dog walk distances allow runners of all levels to get into the spooky spirit. Returning this year, the Great PUPkin Run! This 1-mile run/walk is for pets and their humans! Costumes encouraged, leashes required, wagging tails guaranteed. You may even take home some extra swag as part of our Puppy Costume Contest!
GO! St. Louis partners with local businesses to cultivate a unique experience that includes post-race candy treats, Schlafly beer for the over 21-participants, and a chance to relax and socialize in Trick-or-Treat Village held in Kircher Park.
Don’t forget to dress in costume – the Great GO! St. Louis Halloween Race Costume Contest is a haunting highlight returning to the festive event this year!
Participants receive:
- Premium long sleeve shirt
- Festive Finisher Medal
- Digital Finisher Certificate
- Post-race Treat Bag
Registration pricing coming soon.
Friday, October 17, 2025
- Time: TBD
- Location: Big River West County
Saturday, October 18, 2025
- Time: TBD
- Location: Kircher Park – Eureka, MO
Sunday, October 19, 2025
- Time: 5:30am – 7:00am
- Location: Kircher Park – Eureka, MO
Race Weekend
Half Marathon / 10K Course Map:
5K / Fun Run Course Map:
Race Day Parking
Race day parking will be available at Eureka Soccer Park, Soetebier Park and along S Outer Road.
Saturday Participant Parking
From I-44 Westbound:
Exit at Eureka (exit 264) to Hwy 109
Left on Hwy 109
Left on Augustine Road
Left around bend to continue on Augustine Road
Left onto Williams Road (at horse farm on your left)
Continue until you see Race Parking signs at Eureka Soccer Park or in grass at Soetebier Park.
From I-44 Eastbound:
Exit at Eureka (exit 264) to Hwy 109
Right on Hwy 109
Left on Augustine Road
Left around bend to continue on Augustine Road
Left onto Williams Road (at horse farm on your left)
Continue until you see Race Parking signs at Eureka Soccer Park or in grass at Soetebier Park.
Sunday Participant Parking
From I-44 Westbound:
BEFORE 6:40am
Exit at Eureka (exit 264) to Hwy 109
Left on Hwy 109
Left on Augustine Road
Left around bend to continue on Augustine Road
Left onto Williams Road (at horse farm on your left)
Continue until you see Race Parking signs at Eureka Soccer Park or in grass at Soetebier Park.
AFTER 6:40am
Exit at Eureka (exit 264) to Hwy 109
Follow signage to turn left onto 109, then immediate left back onto I-44 EB.
Exit at the very next exit, Williams Road.
Follow staff directions to parking locations on Williams/S. Outer Road.
From I-44 Eastbound:
To avoid congestion, do not exit at Eureka/109 exit.
Use Williams Road (one further east) Exit.
At Williams Rd, use either parking lots to the south, or street parking to the north.
Street Closures
Sunday, October 19
Williams Road: between S. Outer Road and Augustine Rd: 6:45am – 7:15am
Augustine Road: between Williams Rd and turnaround point at RC Airfield: 6:45am – 7:35am
Georgiana Sq: between Augustine and Maureen: 6:45am – 7:45am
Maureen Dr: between Georgiana Sq and Wallach Dr: 6:45am – 7:45am
Clara Ct: between Maureen Dr and Wallach Dr: 6:45am – 7:45am
Wallach Dr: between Clara Ct and Forest Hills Dr: 6:45am – 7:50am
Forest Hills Dr: between Wallach and Forest Run: 6:45am – 7:50am
Forest Run: between Forest Hills and Augustine Rd: 6:45am – 8:00am
Augustine Rd: between Forest Run and MO-109: 6:45am – 8:15am
MO-109 at Augustine Rd/Central Ave: 7:15am – 8:15am
Central Ave: between MO-109 and Frisco Ave: 7:00am – 8:30am
Frisco Ave: between Central and Bald Hill Rd: 7:00am – 8:30am
Bald Hill Rd: between Frisco and Dreyer Ave: 7:00am – 8:30am
Saturday, October 18
Williams Road: between Kircher Park and South Outer Rd: 4:00pm – 6:00pm
Outer Road: between Williams turn off and into Rte 66 State Park: 4:00pm – 6:00pm
Costume Contest
After the race, stick around for the costume contest! Our costume contest will be held live at a designated time for each distance.
Age Group + Overall Awards
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.
Race Photos
Sponsors
FAQs
The time limit rules listed below will be strictly enforced and will begin when the last runner crosses the start line. Anyone who falls behind the pace must get into the sag vehicle and be transported to the finish, or move to the sidewalk and obey all traffic signals.
Time limits per distance
- Half Marathon: 3 hours and 15 minutes
- 10K: 1 hour and 30 minutes
- 5K: 1 hour
Absolutely, we love walkers, but we ask that you agree to the time limit rules above.
Yes – for our 1-Mile Fun Run, 5K or 10K race we do allow baby joggers or strollers. Participants are asked to start at the back of the start line area.
No. We love our pets too, but for safety reasons pets are not allowed on the course at any time. Participants that compete with a pet will immediately be escorted off the course and disqualified. Dogs will ONLY be allowed on the course in The Great PUPkin Run, a 1-Mile Costume Dog Walk.
Our newest race, this 1-mile run/walk is for pets and their humans and takes place on Saturday morning. Costumes encouraged, leashes required, wagging tails guaranteed.
We do offer a 15% 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 the military discount code, please email us at info@gostlouis.org. Participants utilizing the military discount will be required to provide a military ID or papers during the packet pickup process. This discount is only valid on new registrations and cannot be applied to a previous registration.
Unfortunately we do not offer refunds for any of the events. Costs associated with the pre-planning and ordering of participant amenities well in advance of the race prohibit us from offering refunds. In addition, refunds are not issued if the event is cancelled due to severe weather, disaster or emergency occurrences that may affect the safety and health of the participants. Please take a moment to read the full waiver that is available at the time of registration.
No, transfers are not permitted under any circumstances. While this practice 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.
Half Marathon Participants Only
Yes. If for a medical reason you are unable to participate in the Half Marathon on October 29, 2025, you have the option of deferring your entry to either the 2026 Great GO! St. Louis Halloween Half Marathon or the Half Marathon during the 2026 Marathon & Family Fitness Weekend 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 email the GO! St. Louis office info@gostlouis.org by October 16, 2025. No deferrals will be processed after this date for any reason.
No, this is not allowed. This is frequently termed “race bandit” by race organizers and will be strictly enforced. Course monitors are trained to spot participants who are not displaying a race bib, and they will be escorted from the race course by officials and banned from future GO! St. Louis events.
Volunteer Opportunities
Get involved!
If you are looking for a fun and rewarding experience, consider joining the more than 3,000 volunteers who help make GO! events and programs a success every year.
VolunteerSupport GO! St. Louis
Every donation empowers our non-profit to continue to Rally the Lou by inspiring healthy, active lifestyles in the St. Louis region through exciting events and community programs.
Donate