Tenacious 10

APR

3

2027

A Seattle road race around Lake Union offering 10 mile and 10K courses that start and finish at Gas Works Park with skyline and bridge views.

Sat 3 Apr 2027

Seattle, Washington

Website Registration

10 miles 10 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Tenacious 10

The Tenacious 10 is a Seattle road race that offers two distances and runs a loop around Lake Union. Both races start and finish at Gas Works Park in Seattle, Washington.

The course circles Lake Union and passes the Space Needle, the Fremont Bridge, and other Seattle skyline views. The route is described as flat and fast and is supported with timing and mile split tracking. Finishers receive printed result cards, a custom finisher medal, and a race shirt. A post-race celebration takes place at Gas Works Park.

Race operations include professional timing by Laurel Race and on-course support. The event reported nearly 1,200 registered runners in 2026 and is managed by an experienced race team.

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