From the Organizer
The Medical Lake Trailblazer Tri/Du/5k is one of the many things to do in Medical Lake on Founders Day weekend. This is an athlete-friendly race with a point-to-point open water swim, bike, and run on paved roads & trails.
Trailblazer Triathlon
A 350m swim, 12.2mi bike ride, and 2.92 mi run starting and ending at Waterfront Park.
Trailblazer Duathlon
A 1mi run, 12.2mi bike ride, and 2.92 mi run starting and ending at Waterfront Park.
Trailblazer 5k
A traditional 2.92 mi run around Medical Lake Trail starting and ending at Waterfront Park.
Distances & Pricing
Race Location
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.
Coming Up
Summer Block Party Series with Fleet Feet Tri-Cities
The Big Run Presented by Brooks & Fleet Feet Tri-Cities
Seafair Triathlon
Lake Tye Triathlon - 2026
Frequently Asked Questions (FAQs)
Medical Lake- Trailblazer Triathlon/Duathlon/5K
Jun 20, 2026