Founded in 2010, the Big Backyard 5K (also known as the BBY5K), is a community run/walk showcasing and benefitting King County Parks.

Proceeds from the BBY5K benefit King County Parks, supporting maintenance and operations of facilities and recreational resources. Thoughout 12 years, more than 12,000 runners and walkers have gathered to raise more than $75,000 for King County Parks.

​This year’s event is on Sunday, June 5, and celebrates our ability to gather again with a simple approach to fun and fitness. Click here to find out more and register.