Celebrate 10 years of the BBY5K with us!


Spring is in full swing and that means one of our favorite family friendly events is coming up! The Big Backyard 5K presented by Kaiser Permanente is happening on Sunday, June 2 at King County‚Äôs Marymoor Park. And this year is a very special year as we are celebrating our 10th annual event, which has…

Big Backyard 5K 2018 in photos


  Thank you to all of our participants and partners for your support. Your involvement helps make your King County parks a better place. We appreciate your involvement and thank you for making Your Big Backyard that much more awesome. See you next year for the 10-year anniversary of BBY5K! More photos on our Flickr…

Still time to register! BBY5K is coming up on June 3


It’s that time of year again to lace up your sneakers for your favorite 5K! Our 9th annual Big Backyard 5K presented by Kaiser Permanente is right around the corner on Sunday, June 3 and there is still time to register. Individuals, kids, groups, and teams can sign-up online through June 1 and in-person on…

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…