Tri Millennium

JUL

24-25

2026

A two day multisport event at Millennium Park in Walker, MI offering Olympic and Sprint triathlon, duathlon, aquabike, relay teams, and kids races; proceeds benefit Bridge Street Ministries.

24-25 Jul 2026

Grand Rapids, Michigan

Website Registration

Olympic Tri Swim Sprint Tri Swim Sprint Tri Run Olympic Tri Run Kids Tri (ages 12-15)

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Tri Millennium

Tri Millennium is a two day multisport event held at Millennium Park in Walker, MI (1400 Maynard Ave SW). The event includes Olympic and Sprint distance triathlon, duathlon, and aquabike races, plus relay and kids events on the first day.

Relay options are available for the Sprint and Olympic distances with two- and three-person teams. Kids races are scheduled separately on the first day and separated by age groups.

Course details:

Olympic: 1,500-meter swim, 24.8-mile bike, 6.2-mile run.
Sprint: 750-meter swim, 12.4-mile bike, 3.1-mile run.

Organizers note that the inland waters of Millennium Park are typically calm, the surrounding roads present rolling terrain for the bike course, and the park’s paved trails are flat for the run. Professional timing is provided by Trivium Racing. The event lists Bridge Street Ministries as its charity partner and states that 100% of donations from Tri Millennium support that organization. Visit the organization's website for the most recent information.

6 mi

Olympic Tri Run

3 mi

Sprint Tri Run

Olympic Tri Swim

Sprint Tri Swim

Kids Tri (ages 12-15)

Kids Tri (ages 6-8)

Kids Tri (ages 9-11)

Olympic Aquabike Bike

Olympic Aquabike Swim

Olympic Duathlon