Big Backyard 5K/10K

Event Overview

• Event Name: Big Backyard 5K & 10K
• Date: June 7, 2026
• Location: 6046 W Lake Sammamish Parkway NE, Redmond, WA
• Start Time: 9:00am

About the Event

• Purpose: The Big Backyard 5K & 10K is an annual fun run and family walk celebrating the numerous King County Parks throughout our neighborhoods, cities, and county.
• Founded: 2010
• Benefits: Proceeds from the BBY 5K benefit King County Parks, supporting maintenance within the parks and operations of the facilities and recreational resources.
• Impact: Since the event's inception, more than 13,000 participants have raised over $80,000 for King County Parks!

Join Us

• Event Highlight: Fun in YOUR BIG BACKYARD!
• Location: Join us at King County's Marymoor Park.
• Registration: For more details and to register, visit here.
• Community Involvement: Become a part of a community-focused event that enhances local parks.