Name: Issaquah Schools Foundation Monster Mash 5K
Start: 2026-10-24
End: 2026-10-24
Location: Issaquah

About the Event

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.

We welcome all-ages and abilities. Convenient onsite parking, phased start times, and a professionally chip-timed course ensure a great experience for all. You’ll appreciate the flat, paved, out-and-back route whether you’re 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 2026 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 Offered

In-Person 5K

Oct 24, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

10:00

sell

$35.00

Virtual 5K

Oct 24, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

10:00

sell

$35.00

Weather History

These values represent the 3-year monthly averages for October in Issaquah.

thermostat Temperature

7.5° / 16.1°

wb_sunny Feels like

5.2° / 14.4°

light_mode Avg sunshine hours

6h 42m

water_drop Avg rainfall

5.2 mm

ac_unit Avg snowfall

—

air Avg wind speed

8.1 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Low (2.8)

humidity_mid Humidity

81.6%

wb_twilight Sunrise

07:28

nightlight Sunset

18:18

About Issaquah

Learn more about the host city, Issaquah.

Issaquah is a city of 40,000 people (2019) in King County in the Puget Sound region of Washington State. Its historic downtown is a popular base for hiking in the foothills of the Cascades.

Hotels & Places to Stay

Things to Do Nearby

Tours and activities near Issaquah, powered by Viator.

Loading nearby tours and activities…

Race Results

Official finishing times from previous editions of Issaquah Schools Foundation Monster Mash 5K.

Place	Name	Gender	Age	City	Time
🥇	Z Justus	M	24	Maple Valley, WA	16:11.42
🥈	John Christopher	M	47	Seattle, WA	18:11.06
🥉	Jared Putney	M	25	Issaquah, WA	19:33.05
4	Kennan Schrag	M	28	Issaquah, WA	19:33.55
5	Jordan Crist	M	25	Issaquah, WA	19:33.66
6	Ashley Maton	F	31	Issaquah, WA	19:33.69
7	Larissa Kolasinski	F	28	Issaquah, WA	19:33.71
8	James Johnson	M	34	Bellevue, WA	19:39.1
9	Dyllan Gritter	M	27	Renton, WA	19:46.98
10	Matthew Arroues	M	35	Sammamish, WA	20:27.06
11	Ali Riddick	F	13	Bellevue, WA	20:31.22
12	Mike Williamson	M	58	Redmond, WA	20:34.99
13	Thomas Cottenier	M	46	Sammamish, WA	20:38.74
14	A. Beaudoin	M	12	Bellevue, WA	20:41.92
15	R. Kloster	M	11	Issaquah, WA	20:50.34
16	C. McMeekin	M	12	Issaquah, WA	21:22.31
17	Thomas Bashford	M	38	Renton, WA	21:23.99
18	Fikir Bizuneh	M	37	Issaquah, WA	21:29.3
19	MQ Tran	M	52	Renton, WA	21:39.29
20	M. Marshall	M	12	Newcastle, WA	21:47.37
21	Xiaodong Xu	M	45	Sammamish, WA	21:54.48
22	D. Gaffney	M	12	Issaquah, WA	22:06.12
23	Bryce Kloster	M	45	Issaquah, WA	22:18.49
24	Josh Butchart	M	45	Bellevue, WA	22:23.21
25	M. Ber	M	11	Issaquah, WA	22:31.73
26	T. Woody	M	10	Bellevue, WA	22:33.36
27	G. Velazquez	M	10	Kirkland, WA	22:36.59
28	Jason Broenneke	M	48	Sammamish, WA	22:45.02
29	Aston Lim	M	13	Issaquah, WA	22:47.95
30	Jackson Stagg	M	14	Sammamish, WA	22:56.89
31	Silas Marshall	M	48	Newcastle, WA	22:56.93
32	Thomas Stagg	M	47	Sammamish, WA	22:58.38
33	S. Stagg	M	9	Sammamish, WA	22:59.22
34	Karlee Deatherage	F	34	Everett, WA	23:02.41
35	Garrett Broenneke	M	13	Sammamish, WA	23:06.25
36	Andy Ho	M	39	Renton, WA	23:06.76
37	Cooper Wahlin	M	16	Issaquah, WA	23:22.08
38	Tracy Pleiman	F	55	Issaquah, WA	23:22.26
39	Konstantin Ber	M	49	Issaquah, WA	23:41.65
40	A. Lee	F	8	Sammamish, WA	23:53.11
41	Annika McMeekin	F	49	Issaquah, WA	23:54.01
42	Molly Hurd	F	63	Sammamish, WA	23:55.05
43	Zain Diwan	M	13	Issaquah, WA	24:11.13
44	Blake Zalewski	M	13	Issaquah, WA	24:12.84
45	M. Upton-Weber	F	10	Sammamish, WA	24:18.43
46	Leslie Johnson	F	44	Snoqualmie, WA	24:23.56
47	Spencer Bakke	M	32	Issaquah, WA	24:23.91
48	Riley Harper	M	25	Bellevue, WA	24:27.15
49	Melissa Hathaway	F	46	Issaquah, WA	24:29.81
50	Mendel Guillaume	M	46	Issaquah, WA	24:35.81