Tenacious 10

Sat, Apr 4, 2026, 8:00 AM PDT

Location: Seattle, WA; Gas Works Park, 2101 N Northlake Way, 98103
Type: RUN

At a glance

Experience Seattle's iconic Lake Union loop, a flat and fast course that celebrates the city's beauty and offers an energizing run.

Fun
Scenic
Competitive

Great for: casual, fun-first runners, runners who like a competitive edge

Less ideal for: walkers-only pacing

Join hundreds of runners for the Tenacious 10, an iconic 10-mile loop around Seattle's Lake Union. This event is a celebration of the city, offering a scenic and energizing experience. Whether you aim to chase a personal record on the flat, fast course or simply enjoy the views with friends, this race provides a memorable spring run past city landmarks like the Space Needle and Fremont Bridge.

What to expect

Run a flat, fast, and scenic course around Lake Union, passing city landmarks.
Enjoy chip timing with mile splits, live tracking, and free professional race photos.
Receive a long-sleeve shirt, finisher medal, and printed finisher card.

Standout details

Flat, fast, and scenic Lake Union course
Free professional race photos
Long sleeve shirt + finisher medal
Chip timing with live tracking

Perks & features

Medal
Race Photos
Shirt

From the public listing — confirm on the official site.

Auto-drafted from the public listing — confirm details on the official event page before signing up.

Distances & registration

2 options

Registration for all distances is through the official signup link above.

10K
Sat, Apr 4, 8:00 AM PDT · From $58.24
Opens Oct 17, 2025, 8:00 PM PDT · Closes Oct 31, 2025, 7:59 PM PDT
10 Miles
Sat, Apr 4, 8:00 AM PDT · From $63.54
Opens Oct 17, 2025, 8:00 PM PDT · Closes Oct 31, 2025, 7:59 PM PDT

The course

Hilly
Timed race

Vibe Check

Steady Effort

half marathon distance, mountainous area, typically mild weather

Based on typical seasonal and area patterns — not a course map or official forecast.

From the organizer

Spring has never felt this good.

Join hundreds of runners for Seattle’s most iconic 10K and 10-mile loop around Lake Union. This isn’t just a run—it’s a celebration of everything that makes our city incredible.

Start and finish at Gas Works Park. Cruise past Lake Union Park. Wave to the Space Needle. Conquer the Fremont Bridge.

Chase a PR, run with friends, or just soak it all in—this is one of Seattle’s most scenic and energizing race experiences.

⸻

Why You’ll Love It

• Flat, fast, and scenic Lake Union course • Chip timing with mile splits and live tracking • Printed finisher cards • Long sleeve shirt + finisher medal • FREE professional race photos

⸻

The Experience

Cross the finish line, grab your medal, and celebrate with your crew.

The pain fades. The photos last forever. The bragging rights? Those are eternal.

T 10 WEBSITE

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