Issaquah Schools Foundation Monster Mash 5K

  • Date Sat 25th October 2025
  • Time 10:00AM PDT
  • Location Issaquah, Washington
  • Price $45.20
  • Races 2 races
  • Distances 5km

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Event summary

Get ready for a spooktacular day of fun and fitness at the Issaquah Schools Foundation Monster Mash 5K on Saturday, October 25th, 2025! This exciting community event, located in Issaquah, King County, invites participants of all ages and abilities to join in the festivities while raising funds to support local students across all 27 Issaquah School District schools.

Whether you're aiming to set a personal record or enjoy a leisurely stroll with family and friends, the professionally chip-timed course features a flat, paved out-and-back route that ensures a fantastic experience for everyone. Don your most creative and festive costumes to add to the Halloween spirit! With convenient onsite parking, phased start times, and plenty of fun perks including a 2025 Monster Mash technical race tee and medal for early registrants, this event is not to be missed. Plus, you'll receive free event photos and raffle tickets for exciting prizes! Join us for a morning of camaraderie, competition, and community spiritβ€”register early as this popular event sells out every year!

Organiser's Description

HELP US RAISE A MONSTROUS AMOUNT OF SUPPORT FOR LOCAL STUDENTS ON OCTOBER 25TH! ISF MONSTER MASH 5K IS A COMMUNITY-BASED, FAMILY-FRIENDLY EVENT THAT RAISES FUNDS FOR PROGRAMS THAT SERVE STUDENTS ATTENDING ALL 27 ISD SCHOOLS. [https://isfdn.org/programs/funding-by-school/]

WE WELCOME ALL-AGES AND ABILITIES. CONVENIENT ONSITE PARKING, PHASED START TIMES, AND A PROFESSIONALLY CHIP-TIMED COURSE ENSURE A GREAT EXPERIENCE FOR ALL. YOULL APPRECIATE THE FLAT, PAVED, OUT-AND-BACK ROUTE WHETHER YOURE SETTING A NEW 5K PR OR ENJOYING A BRISK WALK TOGETHER AS A FAMILY! BRING YOUR CREATIVITY FESTIVE COSTUMES ARE ENCOURAGED!

THIS EVENT SELLS OUT EVERY YEAR, SO DON'T WAIT TO REGISTER! EVERY REGISTRATION SUBMITTED BY OCTOBER 12TH RECEIVES A 2025 MONSTER MASH TECHNICAL RACE TEE & MEDAL. REGISTRANTS RECEIVE FREE EVENT PHOTOS AND RAFFLE TICKETS FOR PRIZES AS WELL! PLACEMENT AWARDS FOR FASTEST FINISHING TIMES WILL ALSO BE PRESENTED. SEE BELOW FOR DETAILS.

Races

  • In-Person 5K

    Incl. $5.20 Fee & T-Shirt

    Sat 25th October 2025 (10:00AM PDT)

    $45.20

    Technical Race Tee & Medal Included
  • Virtual 5K

    Incl. $5.20 Fee & T-Shirt

    $45.20

    Technical Race Tee & Medal Included. Pick-up at ISF required.

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Location

4455 E Lake Sammamish Pkwy SE, Issaquah, 98029, WA, United States

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Oct 25, 2025

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