DateExpected
Late July 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Intersection of Curtis Avenue and 3rd Street, Ironton, Minnesota
Ironton, Crow Wing County
Countdown
July
Five laps of the same flat, paved loop. A proper half-day in the saddle, but with almost no climbing, so it's about steady pacing.
Key facts
01Every pedaling rider registers individually, whatever their age
02Five laps of a paved circuit of about 10 miles
03Toddlers in a carrier or Burley ride free with a registered adult
Create a free training plan for the Serpent Lake Century 80 km
7-day free trial, no card required
The course
One lap, on repeat
Ironton · one lap
Distance80km
Total climb71m
Start · finishOne lap · elevation
0 kmDrag map to rotate17.0 km
Weather
Late-July, Ironton
28°CTypical high
17°CTypical low
8°CColdest in 20 years
42%Days with rain
Highs around 28°C and lows around 17°C, but it has dropped to 8°C. Rain on 42% 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 Serpent Lake Century 80 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 Serpent Lake Century 80 km plan targets
Typical sessions
80 km with 71 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 Serpent Lake Century 80 km plan.
7-day free trial, no card required.
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