Heatwave Half Marathon - St. Louis
About this race
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!
Pick your distance
Running
1 Mile
1 Mile registration is untimed and includes a custom bib, designer shirt and an awesome finisher medal! *Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt! The fun includes - Great Swag - designer shirt & custom medal Free photos Plenty of fun! Grab your friends and family, you are not going to 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!
5 K
5K registration includes a custom bib, designer shirt, and an awesome finisher medal! *Youth-based pricing for the 5k/10k, 12 & Under are only $17! *Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt! The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos Plenty of fun! Grab your friends and family, you are not going to 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!
10 K
10K registration includes a custom bib, designer shirt, and an awesome finisher medal! *Youth-based pricing for the 5k/10k, 12 & Under are only $17! *Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt! The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos Plenty of fun! Grab your friends and family, you are not going to 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!
Half-Marathon
Half-Marathon registration includes a custom bib, designer shirt, and an awesome finisher medal! *Youth-based pricing for the 5k/10k, 12 & Under are only $17! *Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt! The fun includes - Great Swag - designer shirt & custom medal Chip-timing with live results and awards Free photos Plenty of fun! Grab your friends and family, you are not going to 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!
Half-Marathon Relay
If you’re participating as part of a relay team for the Half Marathon, please make sure to select the “Half Marathon Relay” event option during registration, NOT the individual Half Marathon. **Each member will need to purchase and register for the Half- Marathon Relay individually and then you can create a team. Relay registration includes a custom bib, designer shirt, and an awesome finisher medal for every team member! Teams can be made up of any number of participants. Register by midnight on Thursday, two Thursdays before race day, to guarantee your shirt! The fun includes – Great Swag – designer shirt & custom medal Chip-timing with live results and awards Free photos Plenty of fun! Grab your friends, family, or coworkers—form your dream team and take on the relay together! Can’t make the race? No problem! We offer a virtual relay option where you can run anywhere, at any time, and still earn the fun swag!
Typical race-day weather
Based on 7 years of historical conditions on this event's race dates in Saint Louis.
About Saint Louis
Heatwave Half Marathon - St. Louis takes place in Saint Louis, Missouri, United States. The local timezone is America/Chicago.
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🏃 Plan Your Next Race in Saint Louis
Find upcoming events by distance:
- Saint Louis 5K Races Best Saint Louis routes for beginners and speed work.
- 10K Run Events in Saint Louis The most popular local distance in Missouri.
- Saint Louis Half Marathons Top-rated 21.1K courses in the Saint Louis area.
- Marathons in Saint Louis Scenic 42.2K routes and Saint Louis Boston qualifiers.
- Saint Louis Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
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