DateExpected
Mid June 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Zinn Cycles shop, 1655 Cannon Cir., Suite 100, Louisville, Colorado
Louisville, Boulder County
Countdown
June
The long gravel loop at Zinn Fondo, close to 100 km with a fair bit of climbing. The biggest ride of the day, and an informal one.
Key facts
01No feed stations, so pack enough food and water for nearly 100 km
02E-bikes are welcome
03An alternative Boulder start is offered
Create a free training plan for the Zinn Fondo 98 km
7-day free trial, no card required
The course
The route
Louisville
Distance98km
Total climb1,433m
StartElevation
0 kmDrag map to rotate95.3 km
Weather
Mid-June, Louisville
29°CTypical high
12°CTypical low
2°CColdest in 20 years
28%Days with rain
Highs around 29°C and lows around 12°C, but it has dropped to 2°C. Rain on 28% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserZinn Cycles, hosted by Lennard Zinn
Websiteblog.zinn.bike
Instagram@zinncycles
Running since1988
Training
Training for the Zinn Fondo 98 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 Zinn Fondo 98 km plan targets
Typical sessions
98 km with 1,433 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 Zinn Fondo 98 km plan.
7-day free trial, no card required.
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