Issaquah Schools Foundation Monster Mash 5K
- Date Sat 24th October 2026
- Time 10:00AM PDT
- Location Issaquah, Washington
- Price $45.20
- Races 3 races
- Distances 5km
Last chance to enter
Race day is fast approaching
Event summary
Get ready for a spooktacular time at the Issaquah Schools Foundation Monster Mash 5K, taking place on Saturday, October 24th, 2026, in Issaquah, King County! This exciting, community-driven event is designed for participants of all ages and abilities, making it the perfect outing for families and friends. Join in the fun as you run or walk the flat, paved, out-and-back course, which is professionally chip-timed to ensure an enjoyable experience. Whether you're aiming for a personal best or just want to soak in the festive atmosphere in your favorite costume, this race promises to be a highlight of the fall season.
By participating in the Monster Mash 5K, you'll be supporting vital programs for local students attending all 27 Issaquah School District schools. Plus, every registration submitted by October 11th comes with the option to receive a coveted 2026 Monster Mash technical race tee and medal! Don't miss out on the chance to earn placement awards, enjoy free event photos, and enter exciting raffles for prizes. Remember, this event sells out every year, so secure your spot early and help us raise a monstrous amount of support for our community's students!
By participating in the Monster Mash 5K, you'll be supporting vital programs for local students attending all 27 Issaquah School District schools. Plus, every registration submitted by October 11th comes with the option to receive a coveted 2026 Monster Mash technical race tee and medal! Don't miss out on the chance to earn placement awards, enjoy free event photos, and enter exciting raffles for prizes. Remember, this event sells out every year, so secure your spot early and help us raise a monstrous amount of support for our community's students!
Organiser's Description
HELP US RAISE A MONSTROUS AMOUNT OF SUPPORT FOR LOCAL STUDENTS ON OCTOBER 24TH! 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 11TH RECEIVES THE OPTION OF RECEIVING A 2026 MONSTER MASH TECHNICAL RACE TEE & MEDAL. OPTION TO WAIVE THE SHIRT (NO-SHIRT REGISTRATION), IF WEARING MONSTERS ISN'T YOUR JAM - MORE OF YOUR REGISTRATION FEE WILL GO TO SUPPORT STUDENTS! REGISTRANTS ARE ELIGIBLE FOR PLACEMENT AWARDS, RECEIVE FREE EVENT PHOTOS, AND RAFFLE TICKETS FOR PRIZES! SEE BELOW FOR DETAILS.
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 11TH RECEIVES THE OPTION OF RECEIVING A 2026 MONSTER MASH TECHNICAL RACE TEE & MEDAL. OPTION TO WAIVE THE SHIRT (NO-SHIRT REGISTRATION), IF WEARING MONSTERS ISN'T YOUR JAM - MORE OF YOUR REGISTRATION FEE WILL GO TO SUPPORT STUDENTS! REGISTRANTS ARE ELIGIBLE FOR PLACEMENT AWARDS, RECEIVE FREE EVENT PHOTOS, AND RAFFLE TICKETS FOR PRIZES! SEE BELOW FOR DETAILS.
Races
-
In-Person 5K
Incl. $5.20 Fee & T-Shirt
Sat 24th October 2026 (10:00AM PDT)
$45.20
Technical Race Tee & Medal Included -
In-Person 5K (No T-Shirt)
Incl. $5.20 Fee
Sat 24th October 2026 (10:00AM PDT)
$45.20
-
Virtual 5K
Incl. $5.20 Fee & T-Shirt
$45.20
Technical Race Tee & Medal Included. Pick-up at ISF required.
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4455 E Lake Sammamish Pkwy SE, Issaquah, 98029, WA, United States
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Issaquah Schools Foundation Monster Mash 5K
