Registration online

Opens January 1, 2016







Key Infor-mooo-tion


Date:   Sunday, June 5, 2016

  • Registration and Start from 6:30 AM to 10:00 AM
  • 100 milers must be on the road by 8:00 AM

Start Location:

Donley's Wild West Town, 8512 South Union Road, Union, Illinois


32, 50, 62, 75, and 100 miles

What's Included:

  • Marked Routes
  • Map and Cue sheets
  • Emergency SAG Services until 5:00 PM
  • Food and Drink Rest Stops
  • A Heifer-ty pasta dinner served from 11:00 AM to 5:30 PM
  • Free Starbucks coffee at Registration

For More Information or Questions:  





Adults     Proceeds help support:
Online at active-logo    


   ♦  Jan. 1 - midnight TBA
   ♦  TBA - midnight TBA
Day of Event $35.00  
Ages 6–12 $10.00
Ages 5 and under Free             
  • Pre-registration closes Midnight, TBA, 2016


  • Active will add a small service fee. Most credit cards accepted, online only.


  • We are unable to accept debit or credit cards in person!


  • "DAY-OF" riders must check-in personally to sign a Waiver and obtain a cowband.

We ride rain or shine—sorry, no refunds!
























Stuff You Need To Know




  • The safety of Udder Century participants is of primary importance. Routes are on public roads & must be shared with motor vehicles. We believe that, while bicyclists deserve to share the road, they also need to show courtesy to motorists and other riders.
  • We require all riders to wear helmets, ride no more than two abreast, and obey all traffic laws.
  • All riders aged fifteen and under must be accompanied and supervised by an adult throughout the ride.
  • Radio-equipped SAG vehicles will be patrolling all routes. While SAGs will stop to help those in need, priority is given to those with justifiable emergencies – riders with irreparable breakdowns, illness, or injury. A flat tire is not considered an emergency. All riders should carry a spare tube, pump, and water. Dave Walker ( provides this handy checklist of other items that you might need. 




Routes and Maps




Please check back for the latest maps and cue sheets for the 2016 Udder. And be aware that last-minute construction can alter the routes as late as the day of the ride. 

[32-mile]   [50-mile]   [62-mile]   [75-mile]   [100-mile] 


Where's Donley's?




Moo-chas Grass-ias


 smiling cow

The McHenry County Bicycle Club would like
to send a special thanks to the sponsors,
donors, and everyone who has helped
us along the way.

The Udder Century would not happen
without all of you.

We encourage all riders to support the generous
folks who helped make this event possible.

Please click on each logo below to learn
more about our contributors.

  logo-donuts    logo-starbucks   logo-baraboo

  logo-drhess     logo-whlwrks     logo-aldi