Ann Arbor Tri, Du, & Aquabike

Event Information

The Ann Arbor Tri has been held since 1986 at the stunning Halfmoon Lake, located in one of Michigan's largest state parks. Participants will enjoy swimming in open waters, biking on scenic rural roads, and running on the Potowatomi Trail. With a history like this, it's no surprise that many come back year after year!

Courses and Distances

• Olympic Triathlon: 1500 meter swim, 28-mile bike, 5.3-mile run
• Sprint Triathlon: 750-meter swim, 14-mile bike, 3.5-mile run
• Olympic Aquabike: 1500 meter swim, 28-mile bike
• Sprint Duathlon: 2-mile run, 14-mile bike, 3.5-mile run
• Olympic Relay: Team event for 2-3 participants
• Sprint Relay: Team event for 2-3 participants
• Open Water 1 Mile Swim: Timed swim event

Registration and Pricing

Pricing varies by course:

• Olympic: $99.50 - $199.00
• Sprint: $84.50 - $169.00
• Aquabike: $99.50 - $199.00
• Duathlon: $84.50 - $99.00
• Relay: $139.50 - $379.00
• Open Water Swim: $29.50 - $59.00

Event Details

Date: Saturday, July 12, 2025

Location: Halfmoon Lake Day Use Facility, Pinckney Recreation Area, Gregory, MI 48137

Post-Race Celebration

Stick around after the race for a fun post-race party featuring delicious food and festivities!

Zero Waste Initiative

This event embraces sustainability and strives for a zero waste process. Join us in caring for our planet!