Join us Saturday, October 26th, for the Issaquah Schools Foundation Monster Mash 5K! Hosted on the East Lake Sammamish Trail, alongside of Lake Sammamish, this professionally chip-timed 5K route is perfect for taking in the colors and spirit of fall!

Set a new training goal for yourself, beat the weekend sugar rush, or simply embrace the festive season with friends outdoors while raising funds for local students. Proceeds from the Monster Mash 5K help provide programs and resources for ISD students in the areas of Academic Success, Mental Health, Basic Student Needs, Community Outreach, and Enrichment.

Warm up lakeside before blasting off from the back row of the parking lot onto the fast, flat, paved East Lake Sammamish Trail. Phased start waves are offered to welcome participants at all activity levels, whether you are an elite runner looking to PR, a fully costumed casual walker, or somewhere in between. Free onsite parking is available near the Start/Finish line with a valid WA State Parks Discover Pass with free overflow parking about .75 mile away.

Save the Date!

Registration Opens in September

All participants arriving in festive seasonal wear will be entered into a raffle for gift cards to local restaurants and stores, so get creative and dress to impress!

Registrations received by 10/9 include a a technical wicking tee & unique medal

Additional Awards for:
Overall 1st, 2nd, and 3rd Place (Male/Female categories)

Age Category Winners for:
Under 10, 10-14, 15-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70+

Early Packet Pick-Up Will be Available 10/27, 4-7 PM @ the Issaquah Schools Foundation

Learn More About Monster Mash 5K