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Big Backyard 5K

Big Backyard 5K

Founded in 2010, the Big Backyard 5K, also known as the BBY5K, is a community-run/walk at King County’s Marymoor Park. Proceeds from the BBY5K benefit King County Parks and brings the organization financial support for maintenance and operations of Your Big Backyard. With your help over the years, we have raised more than $250,000 for King County Parks!

After our 10th year, we are continuing with a 10K course option! Pick your distance and find your pace. Run/Walk 5K or Run 10K!

The BBY5K is family-friendly. Strollers and leashed dogs are always welcome. Don't forget to stick around after your run/walk for a FREE Kids Dash and the fabulous, interactive Post Race Celebration, presented by Pape Machinery featuring refreshing drinks, tasty food, great tunes, and fun prize giveaways.

All Ages
King County's Marymoor Park
6046 W Lake Sammamish Pkwy NE,, Redmond, Washington, 98052 See Map
from 9am to 12pm
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King County's Marymoor Park
6046 W Lake Sammamish Pkwy NE,

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