Welcome to the 2026 edition of the Great Lakes Century, an unforgettable cycling adventure through the picturesque landscapes of Lake and McHenry Counties, Illinois! This year’s route promises stunning views as it weaves its way through rolling hills, offering cyclists a mix of challenging climbs and serene descents. The journey begins in the charming town of Wauconda, IL, setting the stage for what is sure to be an epic day on two wheels. The event caters to both seasoned riders and newcomers alike with four distinct distances: 25 miles, 50 miles, 75 miles, and a full century. Clearly marked paths ensure smooth navigation through every mile, while GPS downloads and cue sheets provide additional guidance for those who prefer technology-assisted directions. Voice navigation is also available to participants using the Ride with GPS account, making it easier than ever to stay on track without missing out on any of the breathtaking scenery. At key points along your route, bike shop support ensures that you’re equipped for every challenge ahead. Rest stops are plentiful and well-stocked until 3:00 PM, offering a variety of food and drink options to keep you fueled throughout the day. Indoor restrooms at both rest stops and strategic locations provide added convenience as you take on this memorable ride. E-bikes with classes 1 and 3 are welcome, making it accessible for all types of cyclists. The route includes scenic hills that will test your endurance while rewarding you with breathtaking views of the countryside. Join us in celebrating camaraderie and cycling community spirit. This is more than just a race; it's an opportunity to reconnect with friends or meet new ones as you share this incredible journey together. Mark your calendars for August 30, 2026, and register today. Follow our Facebook page for the latest updates and event information leading up to the ride. Remember, routes may be subject to change due to weather conditions, road closures, or other unforeseen circumstances. Regular checks on our website will keep you informed about any last-minute adjustments to ensure a safe and enjoyable experience for all participants. See you at the starting line!
Races Offered
2026 Harmon 100 Registration
Aug 30, 2026
straighten
Distance —
160.9K
terrain
Type —
Cycling
timer
57 days remaining
sell
$30.00
Weather History
These values represent the 3-year monthly averages for August in Wauconda.
thermostatTemperature
17.7° / 26.9°
wb_sunnyFeels like
17.7° / 26.8°
light_mode
Avg sunshine hours
11h 48m
water_drop
Avg rainfall
2.5 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.5 km/h (Light breeze)
opacity
Sweat loss rate
High
terrain
Course conditions
Hard and dry surface
sunny
Max UV Index
High (7.0)
humidity_mid
Humidity
72.7%
wb_twilight
Sunrise
06:01
nightlight
Sunset
19:50
About Wauconda
Learn more about the host city, Wauconda.
Wauconda is a village in Lake County, Illinois, United States, a northwest suburb of Chicago. Per the 2020 census, the population was 14,084. It is the site of the Wauconda Bog Nature Preserve, a National Natural Landmark. Wauconda Community Unit School District 118 serves students from Pre-K through 12th grade who live in Wauconda and surrounding communities. Fremont School District 79 also serves students from communities from northern part of Wauconda.