Registration opens for the 2025 Dirty Donut on Wednesday, November 20, 2024 at 7:00 am. The 2024 race was SOLD OUT well before race day. Once the field limit is met we will open a waiting list and attempt to allow as many as possible in the race from that list. Click the BikeReg link above to register.

Race fee schedule for the Beginner 10 mile distance will remain constant –
Age 0-16 – $37            Age 17+ – $57

Race fee schedule for the 22, 42, and 62 mile distances based on how many have registered –
1-249 – $75 Individual        $100 Tandem Team
250-499 – $80 Individual        $105 Tandem Team
500-749 – $85 Individual        $110 Tandem Team
750-999 – $90 Individual        $115 Tandem Team
1,000+ – $95 Individual     $120 Tandem Team

Race fee schedule for the Longjohn 100 mile distance is based on how many have registered –
1-249 – $90 Individual
250-499 – $95 Individual
500-749 – $100 Individual
750-999 – $105 Individual
1,000+ – $110 Individual

Your registration includes – Entry into the race, Custom race numbers, donuts and refreshments at our race donut stations, a beautiful finisher’s medal for every participant, a chance at some of the most awesome winners awards in cycling, food and refreshments after the race (Food for 10 mile and 100 mile racers must be purchased separately), and an event t-shirt is guaranteed for all those who register before midnight May 24th.

(The shirt size that you order at registration is the only size we can give you at packet pickup.  We only order enough sizes to cover the event.)

A portion of each registration will be donated to Make-A-Wish of Michigan and the Martin Michigan Public Schools.