Ready, set, go BBY5K!


Our 8th annual family-friendly 5K run/walk is happening on Sunday, June 11 at Marymoor Park. Register today for the Big Backyard 5K presented by Kaiser Permanente and take advantage of our early bird registration. And now through March 31, for just $5 extra, you can receive the popular BBY5K zip-up hoodie thanks to our friends at Harborstone Credit Union!

Hoodie mockup
The BBY5K is a fun event for the whole family that is also dog and stroller friendly. Hang out before and after the race in our event area and check-out all the offerings our awesome event vendors will have to provide. All participants will receive a super soft t-shirt, refreshments, snacks, and the satisfaction of supporting one of your favorite regional park agencies…us!

The chip-timed course winds around the magnificent (but flat) Marymoor Park, so it’s perfect for a PR. Again, remember to register now through April 15 to receive the early bird price. There’s also a free kids dash for those 10 and under and if we’re lucky, King County’s river safety mascot, Marta the River Otter, just might join us again for the dash!

You can check out the press release for more information and register today as an individual or team at!

Thanks for supporting King County Parks!

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