Date
Sat, 19 Jun 2027
Venue
Martin High School, 1556 Chalmers Street, Martin, MI 49070
Martin, Allegan County
Countdown
June
A 100 km gravel ride with modest climbing, so the distance is the real test. Donut stops help you get through the long middle.
Key facts
01Award cut-offs last year: 12:00 for Sprint, 13:00 for Donut
02Rankings split by sex, age group and racing class (no team categories)
Create a free training plan for the Dirty Donut Race 100 km
7-day free trial, no card required
The course
One lap, on repeat
Martin · one lap
Distance100km
Total climb701m
Start · finishOne lap · elevation
0 kmDrag map to rotate6.4 km
Weather
Mid-June, Martin
26°CTypical high
15°CTypical low
6°CColdest in 20 years
44%Days with rain
Highs around 26°C and lows around 15°C, but it has dropped to 6°C. Rain on 44% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Dirty Donut Race 100 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Dirty Donut Race 100 km plan targets
Typical sessions
100 km with 701 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Group rides for drafting and bunch-riding skills
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Dirty Donut Race 100 km plan.
7-day free trial, no card required.
Other races at Dirty Donut Race
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