DateExpected
Late August 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Wauconda High School, 555 North Main Street, Wauconda, IL 60084
Wauconda, Lake County
Countdown
August
The full century, 100 miles in one loop, on a ride with a history back to 1970. Noncompetitive and supported, so the only thing to beat is the clock on support.
Key facts
01SAG support and routes close at 15:30, so plan your pace from a 06:30 start
02Helmet required; under 18s must ride with an adult throughout
03Class 1 and Class 3 e-bikes are allowed
Create a free training plan for the Harmon 100 161 km
7-day free trial, no card required
The course
The route
Wauconda
Distance161km
StartElevation
0 kmDrag map to rotate156.5 km
Weather
Late-August, Wauconda
27°CTypical high
16°CTypical low
8°CColdest in 20 years
35%Days with rain
Highs around 27°C and lows around 16°C, but it has dropped to 8°C. Rain on 35% of days.
NASA POWER data, 2006-2025, the week either side of race day
Organiser
Training
Training for the Harmon 100 161 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 Harmon 100 161 km plan targets
Typical sessions
161 km
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 Harmon 100 161 km plan.
7-day free trial, no card required.
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