The Dirty Mitten Gravel Triathlon logo

The Dirty Mitten Gravel Triathlon

The Dirty Mitten Gravel Triathlon is a triathlon, aquabike, and duathlon race on September 20, 2026 in Middleville, MI, with entry fees from $59.67 to $169.

Date
September 20, 2026 (59 days to go)
Price
$59.67–$169
Sports
TriathlonAquabikeDuathlon
Register →

From the Organizer

THE DIRTY MITTEN IS PROUD TO BE THE 2026 GRAVEL WORLD CHAMPIONSHIP OF THE UNIVERSE (yeah, we made that up, but the event is so good we are sticking with it)!

Based out of Camp Manitou-lin in Middleville, MI, The Dirty Mitten offers a beginner friendly sprint option (The Shorty), and a more challenging Olympic (The Long One) course.

9 EVENTS TO CHOOSE FROM: 4 events at each distance: The Shorty (sprintish), The Long One (olympicish), both feature triathlon, aquabike, duathlon and relay... plus you can join us virtually!

TO DO: Frederick Meijer Garden & Sculpture Park, John Ball Zoo, Gerald R. Ford Presidential Library & Museum

AIRPORT: Gerald R Ford International Airport

AIR TEMP (AVG): 54 F / 70 F

WATER TEMP (AVG): 67 F and wetsuit legal

We think we are awesome but will admit we are biased.  Check out our athlete's forum to ask questions from those who have already experienced the awesomeness that is The Dirty Mitten!

Events

The Long One Relay - 3 Person (Olympic)$81.33
The Long One Relay - 2 Person (Olympic)$122
The Long One Triathlon (Olympic)$169
The Long One Duathlon (Olympic)$169
The Long One Aquabike (Olympic)$169
The Shorty Relay - 3 person (Sprint)$59.67
The Shorty Relay - 2 person (Sprint)$79.50
The Shorty Triathlon (Sprint)$129
The Shorty Aquabike (Sprint)$129
The Shorty Duathlon (Sprint)$129

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

73°

Typical Low

48°

Chance of Rain

36%

Based on US Climate Normals data from Hastings, 12 mi from the venue.

Sunrise 7:27 AMSunset 7:42 PMDaylight 12h 15m

Host City

About Middleville, MI

City Elevation

756 ft

Nearest Airport

GRR

Gerald R. Ford International Airport · 13 mi

Time Zone

Eastern Time

From Endurance Grid

Line up lodging and travel early to lock in your race weekend.

Race Location

Your Next Start Line

What Are You
Waiting For?

Every finish line starts with a single decision. Claim your spot at The Dirty Mitten Gravel Triathlon, put it on the calendar, and turn “someday” into a start date.

59

Days to train

Race
The Dirty Mitten Gravel Triathlon
Date
September 20, 2026

Want more races like this?

Enter your email and we'll send more your way.

From Endurance Grid

About These Sports

This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.

Triathlon

Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.

Aquabike

A swim followed by a bike — a triathlon without the run. Sprint and Olympic distances, often alongside a tri at the same venue.

Duathlon

Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.

Plan your trip

Make it a Racecation

Coming from out of town? There's more to Middleville 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 Middleville
Lodging
Flights
Rental Car
Activities

Frequently Asked Questions (FAQs)

What is The Dirty Mitten Gravel Triathlon?+
The Dirty Mitten Gravel Triathlon is a triathlon, aquabike, and duathlon race held in Middleville, Michigan on September 20, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more triathlon races near you or explore our sports guides to learn what race day actually feels like.
When and where is The Dirty Mitten Gravel Triathlon?+
Sunday, September 20, 2026 in Middleville, Michigan at 1095 N Briggs Rd. Check the event page for exact start times and wave schedules.
How do I register for The Dirty Mitten Gravel Triathlon?+
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

The Dirty Mitten Gravel Triathlon

Sep 20, 2026

Register →