Big Backyard 5K/10K
June 7, 2026
Marymoor Park, USA
About
The Big Backyard 5K & 10K is an annual fun run and family walk celebrating the numerous King County Parks throughout neighborhoods, cities, and county. Founded in 2010, proceeds benefit King County Parks maintenance and operations. The event takes place at Marymoor Park and welcomes participants of all ages, including a 1K Kids Run.
Pick your distance
Everything below adapts to your choice
Start time
9:00 AM
The information shown here is based on the most recent listing we could find, and may change. Always confirm details on the event's official site before registering.