Tenacious 10

APR

4

2026

Tenacious 10 is a Lake Union loop in Seattle with a 10 mile and a 10K course starting and finishing at Gas Works Park on April 4, 2026. The flat route offers skyline and bridge views and is professionally timed with mile splits.

Sat 4 Apr 2026

Seattle, Washington

Website Registration

10 miles 10 kilometers

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Tenacious 10 Seattle 10 Mile and 10K

The Tenacious 10 is a road race in Seattle that offers two measured distances circling Lake Union. The event starts and finishes at Gas Works Park and is scheduled for April 4, 2026. The course follows a loop around Lake Union with views of the Space Needle, the Fremont Bridge, and the Seattle skyline.

The route is described as flat and fast. Timing is provided by Laurel Race with mile split tracking and printed finisher result cards. Race amenities include a custom finisher medal and race shirt, on-course support, and a post-race celebration at Gas Works Park. The event information also lists packet pickup, parking and directions, and spectator guidance.

The event listing notes nearly 1,200 registered runners. Course details and a map are available through the event's course pages. The Tenacious 10 presents a city-loop road race experience around a central Seattle lake with timing features and post-race recognition.

Distances Visit the organization's website for the most recent information.