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Monster Mash 5K

Monster Mash 5K 2022 – SOLD OUT!

 October 29, 2022 – 10am
Lake Sammamish State Park Boat Launch/East Lake Sammamish Trail

Click to View the Race Results!


View MM5K 2022 Photo Gallery

Photos courtesy of Memory Disk Photography Club #memorydiskphotographyclub

Thank You for Making 2022 Monster Mash 5K a Monstrous Success!

In the end, you helped us raise $47,500 for resources and programs benefitting students attending the 26 schools in the Issaquah School District! We couldn’t have done it without the generous support of our sponsors, volunteers, and dashers – thank you! Make sure to check out your event results and photos and tag us at #issaquahschoolsfoundation or @isfdn when you post your own MM5K pics!


Share Our Monster Mash 5K Facebook Event with Others Now!

Invite your friends and family to join in on the fun! Share our Facebook Event page to encourage others to participate! 

All registrations receive a 2022 MM5K Medal!

Registrations received by October 9, 2022 get a T-Shirt & 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 Pickup:

Avoid the lines on race day by picking up your packet early! To avoid elementary school bus traffic in the area, Early Packet Pickup is available on Friday, Oct. 28th any time between 4-7 pm at the Issaquah Schools Foundation located at 4225 West Lake Sammamish Pkwy SE, 98008. Limited parking in front of the building, additional overflow parking next door at Sunset Elementary. OK to pick up additional packets for friends and family.

*Packets include: timing bib, medal, tee (if you registered by Oct. 9th) and pre-purchased Discover Passes.


Packet Pick-Up/Onsite Parking:

West Lake Sammamish State Park Boat Launch

4455 E Lake Sammamish Pkwy SE, Issaquah, WA 98029

5K Route:

East Lake Sammamish Trail (Click on image for preview)


Thank You to our Sponsors!




Hilton Garden Inn - Issaquah        Issaquah Family Chiropractic
Jennifer McGeary, Penrith Home Loans – NWMLS#106496
Kumon Math and Reading Center of Issaquah - Highlands
Mindful Connections Coaching, LLC      Safeway     Sara Miller Group - Windermere

100% of all proceeds go to support local students via the Issaquah Schools Foundation.





As a community-powered non-profit organization, we value and welcome your involvement. Your donation of time and talent will directly impact the quality of education our students receive.

Fueling Success for Every Student, Every School