The Dirty Mitten Gravel Bike Race
About this race
The Dirty Mitten is a great early fall race and a proud member of the Boundless RR Co. Grand Prix and a premier event for the I Love Gravel Racing Series.
The race starts and ends at the YMCA’s Camp Manitou-Lin in Middleville, MI. Situated halfway between Grand Rapids and Kalamazoo, it’s a convenient venue for just about all of West Michigan so you have no excuse not to come out!
Pick your distance
Gravel biking
10 Mile - Open
10 Mile - Tandem
28 Mile - Open
28 Mile - Single Speed
28 Mile - Fat Bike
28 Mile - Clydesdale
28 Mile - Athena
28 Mile - Tandem
50 Mile - Open
50 Mile - Elite
50 Mile - Single Speed
50 Mile - Fat Bike
50 Mile - Clydesdale
50 Mile - Athena
50 Mile - Tandem
Typical race-day weather
Based on 3 years of Open-Meteo archive data for this event's race dates in Middleville, plus the 3 days either side.
The sun rises at 7:26 AM and sets at 7:44 PM local time (EDT) in Middleville on September 19, 2026 — 12h 18m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Middleville
Different organizers, within 40 miles, in the next three months
Duncan Lake Middle School Color Run
Cal Crusher
Candy Cane Course- Grand Rapids
Always Leave Smiling 5K Run/Walk
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 7 Middleville events
Spotted something wrong? Tell us and we'll fix it.