DateExpected
Early July 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Chelsea High School, 740 N Freer Rd, Chelsea, MI 48118
Chelsea, Washtenaw County
Countdown
July
The full century, and the one to commit to. Over 160 km on pavement with gentle climbing, so it is all about pacing and an early start.
Key facts
01Riders 17 or under must register, ride with an adult and have a guardian waiver
02Helmets are required
03Class 1 pedal-assist e-bikes are allowed
Create a free training plan for the One Helluva Ride 161 km
7-day free trial, no card required
The course
The route
Chelsea
Distance161km
Total climb832m
StartElevation
0 kmDrag map to rotate158.4 km
Weather
Early-July, Chelsea
28°CTypical high
17°CTypical low
8°CColdest in 20 years
41%Days with rain
Highs around 28°C and lows around 17°C, but it has dropped to 8°C. Rain on 41% 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 One Helluva Ride 161 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 One Helluva Ride 161 km plan targets
Typical sessions
161 km with 832 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 One Helluva Ride 161 km plan.
7-day free trial, no card required.
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