Tenacious 10

APR
4
2026
Run around beautiful Lake Union in Seattle with your choice of a 10K or 10 mile loop. Enjoy views of the Space Needle and Fremont Bridge followed by finisher medals and professional photos.
Sat 4 Apr 2026
10 miles 10 kilometers

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

Tenacious 10

The Tenacious 10 features two distinct running distances starting and finishing at Gas Works Park in Seattle. Participants can choose between two main events:

  • 10 Miles
  • 10K

The route consists of a loop around Lake Union, providing views of the water and the Space Needle. Runners pass through Lake Union Park and cross the Fremont Bridge during the race. The course is designed to highlight various landmarks within the city.

Participants receive digital timing services that include mile splits and live tracking. Upon completing the course, finishers are provided with printed cards showing their results. Race registration includes a long sleeve shirt, a finisher medal, and professional race photography at no additional cost.

The event takes place in the spring, utilizing the paved paths and streets surrounding the lake. Practical race day information and detailed course maps are maintained by the organizers for both the 10K and 10-mile distances. Visit the organization's website for the most recent information.

10 mi
10-Mile
10 km
10k