Tenacious 10
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Event overview
The Tenacious 10 takes place on April 4, 2026, in Seattle, Washington, with the event base at Gas Works Park. The event offers two race distances and is USATF sanctioned. Start and finish are located within Gas Works Park.
- 10 mile
- 10K
Course and logistics
Both courses loop around Lake Union and pass local landmarks including Lake Union Park, the Space Needle, and the Fremont Bridge. Runners follow Eastlake to Fairview and will use Westlake Ave. N. or sidewalks, bike lanes, and trail sections depending on permitting. Roads will be closed along parts of the course.
Packet pickup is scheduled for Friday, April 3, at Gas Works Park (time TBD). Parking is available at Gas Works Park and is listed as free; participants are advised to allow extra time to find a spot. The race provides a zip-up hoody, a finisher medal, and event photos. A block of discounted hotel rooms is available at Springhill Suites Seattle Downtown/South Lake Union; the booking deadline is March 5. Prices listed on the organizer site are $68 for the 10-mile and $63 for the 10K, with the price increasing after December 31, 2025. Visit the organization's website for the most recent information.
