In 292 days · Sat, Jul 31, 2027
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Saturday, July 31st, 2027
TBD, Caledonia MI
1 Mile · 5K · 10K · Half
63–82°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2026
62–82°F
dry
2025
61–76°F
dry
2024
67–87°F
dry
2023
57–78°F
dry
2022
64–84°F
dry
2021
55–77°F
dry
2020
62–81°F
dry
2019
59–79°F
dry
2018
61–78°F
rain
2017
61–83°F
dry
Best months to race in Michigan →
Going long?
Fuel wins races.
Gels, chews, electrolytes, anti-chafe — everything for 13.1 and beyond.
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!
Course map
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Run clubs near Caledonia to train with before race day.
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