The Peninsula Century Fall Challenge Sister Bay’s Door County century ride returns to Sister Bay on September 19th, 2026. The event takes place at Waterfront Park, a picturesque waterfront setting in the heart of Sister Bay, Wisconsin. Participants can choose from four routes: 25-mile, 50-mile, Century (100 Miles), and Metric Century (62+ Miles). Each offers scenic views along Door County’s shoreline and countryside. Race morning at Waterfront Park finds runners basking under clear skies with a temperature that hovers around the mid-teens. The park is bustling with pre-race excitement, filled with participants warming up on nearby streets before heading out onto firm but slightly soft terrain. As racers complete their routes, they’ll pass through charming neighborhoods and orchards, taking in the natural beauty of Door County. The Peninsula Century Fall Challenge has been a tradition since its inception in 2014, drawing over 800 riders each year to support local charities and scholarships. This event matters locally because it brings together communities from all around for an unforgettable cycling experience. Course venue starts at Waterfront Park where the ride departs onto scenic back roads leading through Door County’s orchards and shoreline. The route includes four distinct sections, with multiple aid stations offering refreshments. The finish line is back in Sister Bay's gleaming expanse of beachfront parkland, making it a memorable destination for post-ride celebrations. On race day, expect the temperature to range from 14.9°C to 20.3°C, feeling comfortable at around 17.6°C with an average wind speed of 15.3 km/h and humidity levels just under 80%. The course conditions are firm but slightly soft due to typical September rain, which averages 1.3mm.
25-mile 25mi • Start: 07:00:00 • Fee: $75.00
50-mile 50mi • Start: 07:00:00 • Fee: $75.00
Century (100 Miles) 100mi • Start: 07:00:00 • Fee: $75.00
For registration, visit https://raceroster.com/events/2026/113533/peninsula-century-fall-challenge. The fee is $75 for all distances and you must register by the deadline to secure your spot. Pick up bibs at Waterfront Park on race morning before 8 AM, bringing a photo ID if needed. The start location is Waterfront Park in Sister Bay, Wisconsin, with an age requirement of being over 16 years old. First-timers should bring their bikes and gear prepared for the firm but slightly soft conditions you might encounter during the ride. This event is worth attending because it supports local charities while offering a beautiful cycling experience through Door County’s unique landscapes.
Races Offered
25-mile
Sep 19, 2026
straighten
Distance —
25mi
terrain
Type —
Cycling
timer
07:00
sell
$75.00
50-mile
Sep 19, 2026
straighten
Distance —
50mi
terrain
Type —
Cycling
timer
07:00
sell
$75.00
Century (100 Miles)
Sep 19, 2026
straighten
Distance —
100mi
terrain
Type —
Cycling
timer
07:00
sell
$75.00
Metric Century (62+ Miles)
Sep 19, 2026
straighten
Distance —
62mi
terrain
Type —
Cycling
timer
07:00
sell
$75.00
Weather History
These values represent the 3-year monthly averages for September in Sister Bay.
thermostatTemperature
14.9° / 20.3°
wb_sunnyFeels like
12.9° / 19.1°
light_mode
Avg sunshine hours
10h 30m
water_drop
Avg rainfall
1.3 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
15.3 km/h (Gentle breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (3.5)
humidity_mid
Humidity
80.1%
wb_twilight
Sunrise
06:27
nightlight
Sunset
18:57
About Sister Bay
Learn more about the host city, Sister Bay.
Sister Bay is a village in Door County, Wisconsin, United States. The population was 1,148 at the 2020 census. It is situated along the shore of Green Bay on the Door Peninsula, a popular Upper Midwest vacation destination.
