2025 - Chilly Willy Winter Run Series - SEVEN Events!
2025 distances
Running
Chilly Willy Winter Run Series 5K
Chilly Willy Winter Run Series 10K
Chilly Willy Winter Run Series Half
Series runners who select the half marathon option will be automatically dropped to the 10K distance for races that do not have a half marathon distance.
Chilly Willy Winter Ruck Series 5K
Race-day weather
Conditions on November 8, 2025 — historical Open-Meteo data.
The sun rises at 6:38 AM and sets at 4:37 PM local time (CST) in Oconomowoc on November 8, 2025 — 9h 58m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Oconomowoc
Different organizers, within 40 miles, in the next three months
Chilly Willy Winter Run Series - SEVEN Events!
OconoWattaWoc
Zachariah's Acres Fall Run, Walk & Roll
OPEF Trick or Trot
🏃 Plan Your Next Race in Oconomowoc
Find upcoming events by distance:
- Oconomowoc 5K Races 18 races
- 10K Run Events in Oconomowoc 9 races
- Oconomowoc Half Marathons 8 races
- Marathons in Oconomowoc 2 races
- Oconomowoc Running Calendar 2026 20 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 23 Oconomowoc events
Spotted something wrong? Tell us and we'll fix it.