Silver Lake Intermediate School
555 Oconomowoc ParkwayOconomowoc, WI 53066


Located at the Silver Lake Intermediate School at the desiginated spots.

Please do not park on the run/bike course. A parking map can be found at the bottom of the page  (HERE.)



February 1st  -  February 12th$45$55
February 13th  -  March 15th$50$60

March 16th  -  April 26th

April 27th  -  Online Reg Close$60$70

*Shirt Cutoff Deadline is Midnight May 17th

*Online Reg Closes on Midnight on May 25th

Race Day/ Packet Pickup



Saturday, May 27th - 8:00am Start

Pricing & Registration:

click here to register online at Get Me Registered

Shoreline Duathlon 

August, 6th

Packet Pickup/ Registration ​
Friday, May 26th:
4:00pm-6:00pm at Endurance House Delafield
2736 Hillside Dr, Delafield, WI 53018​
Saturday, May 27th: Race Morning
At race site between 6:30am-7:45am​

Your FREE Event Photos:

Download today and SHARE!!

Tag #WisconsinDuSeries #CooneyDuathlon

2017 Photos

2016 Photos 

2015 Photos​

2013 Photos

2010 Photos

The Cooney Duathlon consists of a 2 mile run, 20 mile bike and another 2 mile run.
  • Run #1: A pancake flat 2 mile course on pavement. Course map is available (HERE)
  • Bike: A quick 20 mile rolling hill course with country views. This is a well marked course with mechanical support provided by Endurance House. Course map is available (HERE) 
  • Run #2: Another flat 2 mile course that is different from the first run course. 
    Course map is available (HERE)

Cooney Duathlon


20172016, 2015, 2014, 2013, 2012, 2011, 2010

A portion of every registration goes to Team Marissa, a non-profit founded to honor the amazing life of Marissa Lieblang who lost her battle with cancer at the age of five. The purpose of Team Marissa is to not only raise awareness and funds for childhood cancer research but to help those families who are currently affected by this horrible disease. 

Wisconsin Duathlon Series


Top 3 Overall Male/Female
Top 3 Male/Female each age group
19 and under, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70 and over
Top 1 each relay division (Male, Female, Coed)

The Cooney Duathlon an event for everyone.

An early season, Memorial Weekend multisport event to satisfy everyone! The layout of this event is great for first timers and for those wanting to test your limits to get the 'cob webs' out after the long winter months. The 8th annual Cooney Duathlon consists of a 2 mile run, 20 mile bike ride and finishes with another 2 mile run.  

Run + Bike + Run = FINISH

Following the event socialize with a game of washers, listen to music, eat some food and embrace the outdoors. The layout of this event is great for first timers, those wanting to get test their limits with a challenge and those simply wanting to get the 'cob webs' after the winter months.

Whole Series registration available!

Lake Country Duathlon

October, 15th

Timing: Provided by Eclipse Timing, Inc.
*You MUST start in your correct wave and timing chips MUST be returned after the event!*
Individual Participants
; you MUST wear your "ChampionChip" ankle strap, helmet sticker and your bib number in front of your body.
RELAY participants; you must wear your teams designated "ChampionChip" ankle strap. The chip must be switched between the runner and biker in the transition area. One helmet sticker and bib provided for each relay team.

Whats Included?
- A fun, quality, safe and challenging event
- Music and entertainment!
- Free FocalShare digital photo download
​- Cooney Duathlon finisher medal
- Post race re-hydration and food
- Professional timing
- Participant Technical Short Sleeve shirt
- 500 Points for the Wisconsin DUathlon Series Championship
(You MUST Register BEFORE Midnight on Wednesday May 17th to receive an event shirt)

Sign up for ONE or sign up for the GRAND SLAM!

Cooney Duathlon

May, 27th

** Wisconsin Duathlon Series has a NO REFUND policy. No refunds will be issued for any reason, including race cancellation due to inclement weather. The Race Director holds the right to cancel or alter the event and the courses at any point for participant safety. **

Transition Area: ​
​Transition will be open race morning only from 6:30am-7:45am
Bike racks are labeled (8 bikes per rack/16 per row), please do not take up your neighbor's space on the ground area or bike racks. 
** PLEASE make sure your area is prepared and you have cleared the transition area by 7:45 am **

Cooney Duathlon Sponsors!