Big Fish Triathlon and Duathlon

Ortonville Recreation Area
5779 Hadley Road,
Ortonville, MI 48462

3 Disciplines is excited to once again be hosting this fun but challenging course with in this beautiful recreation area. The swim is in the small confines of Big Fish Lake, which means a two loop swim course for Olympic athletes. The bike course and run course are what everyone loves. They are very fast, but a challenging, rolling course. Flat in the middle and back, rolling in the first and last 5k. Same for the run but reverse, flat in the beginning and rolling in the back side. It is on a dirt road that rolls along scenic farmland where you can see horses on either side and little to no traffic on run course. Our number one goal is to keep athletes safe. This event must be capped at 500 athletes.

Choose your race:

Olympic Triathlon - 1500m swim, 23mi bike, 10k run 
Sprint Triathlon - 500m swim, 20k bike, 5k run 
Duathlon - 5k run, 20k bike, 5k run
Olympic Aquabike - 1500m swim, 23mi bike
Sprint Aquabike - 500m swim, 20k bike
Super Sprint - 200m swim, 10k bike, 1mi run
**Relays offered for both the Olympic and Sprint Distance Triathlon


$80 thru April 16th
$90 April 17th and after until online registration closes midnight Thursday before the event.

Super Sprint
$38 until online registration closes midnight Thursday before the event.

Relays for Sprint or Olympic
$105 thru April 16th
$120 April 17th thru midnight Thursday before the event.

Online Registration 
Closes midnight Thursday before the event.

Onsite Registration - CASH ONLY
Day before: add $10 to above pricing (2-5 p.m.) 
Day of: add $20 to above pricing (6-7:15 a.m.)
Relays: add $20 to above pricing 

Non-USAT Members
Must pay a $15 One Day Fee (collected ON-SITE cash or check ONLY).

For more information please contact [email protected] or call 231-546-2229. Information and registration is also available online at

Please Note: The Michigan Department of Natural Resources makes every effort to provide the most up-to-date and accurate information on the web calendar. However, dates occasionally change and events may be canceled for any reason. Please call the unit hosting the event to confirm dates and times prior to your arrival.

A Recreation Passport is required for entry into all Michigan state parks and recreation areas. Check "YES" when you renew your license plate at the Secretary of State.

For camping reservations, visit or call 1-800-447-2757.

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