King County Parks’ Big Backyard 5K, presented by Group Health, will start at 9 a.m. on June 1 and will take participants through Marymoor Park at the northern end of Lake Sammamish. The course will follow the Marymoor Connector Trail and a portion of the East Lake Sammamish Trail. Strollers and leashed dogs are welcome.

A free kids’ dash featuring King County’s environmental mascot Bert the Salmon will follow the fun run at 10 a.m.; the awards ceremony will take place at 10:15 a.m.

For $25, entrants will receive an event T-shirt, plus food, drinks and more on race day. To register, people can sign up online at www.bby5k.com. Funds raised by the 5K help leverage King County taxpayers’ investment in parks, trails and open space by keeping these features open and safe for all to enjoy.

The Big Backyard 5K promotes fitness and community involvement, and has raised more than $125,000 for King County Parks.