Heatwave Half Marathon - St. Louis
Heatwave Half Marathon - St. Louis is a running race on August 1, 2026 in St. Louis, MO, with entry fees from $17 to $74.
- Date
- August 1, 2026 (9 days to go)
- Location
- Grant Trail, St. Louis, MO
- Price
- $17–$74
- Sport
- Running
From the Organizer
Join us for the Heatwave Half Marathon, 10K, & 5K!
A sun-soaked summer challenge that’s perfect for the whole family.
The fun includes –
- Great Swag – designer shirt & custom medal
- Chip-timing with live results and awards
- Free photos
- FREE ice cream at the finish to help you cool off
- Plenty of hot fun in the summer sun!
Grab your friends and family—you won’t want to miss this one!
Can’t make the race? No problem! We offer a virtual race option where you can run anywhere, at any time, and still earn the fun swag!
Youth-based pricing is available: ages 12 & under are only $17!
Half Marathon/10K/5K registration includes a custom bib, designer shirt, and an awesome finisher medal!
1 Mile registration is untimed and includes a custom bib, designer shirt, and an awesome finisher medal!
Kid’s Dash is a fun, untimed dash for ages 10 and under. Registration includes a mini bib, youth-sized shirt, and a specially crafted medal for our youngest runners! (If your child wants to run the kid’s dash without swag, they’re welcome to run free on race day!)
Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt!
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
90°
Typical Low
72°
Based on US Climate Normals data from St Louis Sci Ctr, 6 mi from the venue.
Host City
About St. Louis, MO
Population
293,109
as of 2023
City Elevation
471 ft
Nearest Airport
STL
St. Louis Lambert International Airport · 9 mi
Time Zone
Central Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Heatwave Half Marathon - St. Louis, put it on the calendar, and turn “someday” into a start date.
9
Days to train
- Race
- Heatwave Half Marathon - St. Louis
- Date
- August 1, 2026
- Location
- Grant Trail, St. Louis, MO
Want more races like this?
Enter your email and we'll send more your way.
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More Running races near St. Louis, MO
35th Annual Run for the Hills
1 Mile · 5K · From $20 · Nottingham and Childress
3 miles away
Hawk Run/Walk 5 K
5K · From $25 · 341 E Lockwood Ave
3 miles away
MQP Bratfest 5k and 1-mile Fun Run
1 Mile · 5K · From $25 · 680 West Lockwood Ave
4 miles away
St. Peter Dash
5K · From $20 · 215 N Clay Ave.
5 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to St. Louis than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to St. LouisFrequently Asked Questions (FAQs)
What is the Heatwave Half Marathon - St. Louis?+
When and where is the Heatwave Half Marathon - St. Louis?+
How do I register for the Heatwave Half Marathon - St. Louis?+
Heatwave Half Marathon - St. Louis
Aug 1, 2026