When is Tenacious Ten?

Tenacious Ten takes place on Apr 4, 2026. That's in 1 month.

Where is Tenacious Ten located?

Tenacious Ten is held in Seattle, Washington, United States.

What distances are available at Tenacious Ten?

Tenacious Ten offers the following distances: 10M, 10K.

How do I register for Tenacious Ten?

You can register for Tenacious Ten through the official registration page.

What is the typical weather for Tenacious Ten?

Based on historical data, you can expect temperatures between 41°F and 57°F on race day. There's approximately a 15% chance of precipitation.

Tenacious Ten (10K-10M) - Apr 4, 2026 | Seattle, WA

Get ready to conquer Seattle's iconic waterfront at the Tenacious Ten on April 4, 2026, offering both a challenging 10-mile and a swift 10K distance. This annual event, presented by the Run Super Series, is a celebrated loop around the picturesque Lake Union, renowned for its vibrant community spirit and superb organization. Whether you're chasing a new personal best or simply soaking in the city's beauty, the Tenacious Ten promises an unforgettable early spring running experience.

The course is widely praised as flat and 100% paved, making it an excellent opportunity for runners of all levels to push their limits. Starting and finishing within the scenic Gas Works Park, participants will embark on a journey filled with breathtaking vistas. Runners will cruise past iconic landmarks like Lake Union Park, wave to the towering Space Needle, and conquer the historic Fremont Bridge, all while enjoying panoramic views of the water and the vibrant urban landscape. Aid stations, stocked with water and sports drinks, are conveniently located approximately every two miles along the course, with portable toilets available at these stations and the start/finish area. Medics are also on hand at the finish line for support.

Runners consistently laud the Tenacious Ten for its lively atmosphere and smooth execution, making it a beloved fixture in the Seattle running calendar. Typical race day conditions in early April feature comfortable highs around 57°F and lows of 41°F, with only a modest 15% chance of precipitation, providing ideal weather for a strong performance. Your registration includes a super comfy long-sleeve shirt, a gleaming finisher medal, and complimentary professional race photos to commemorate your achievement. Join hundreds of fellow tenacious runners for this premier event and create lasting memories on one of Seattle's most beautiful routes.