In 25 days · Sat, Oct 24, 2026
Don't let race day sneak up
One email during race week. That's it.
When
Saturday, October 24th, 2026
Where
4455 E Lake Sammamish Pkwy SE, Issaquah WA
Distance
5K
Typical weather
44–57°F · rain likely
See last 10 years
On this date: rain 5 of the last 10 years
2025
48–58°F
rain
2024
43–55°F
dry
2023
45–53°F
rain
2022
46–57°F
rain
2021
49–58°F
rain
2020
37–49°F
dry
2019
41–60°F
dry
2018
45–59°F
dry
2017
41–63°F
dry
2016
50–62°F
rain
Best months to race in Washington →
About this race
Event Overview
- Date: October 24, 2026
- Location: 4455 E Lake Sammamish Pkwy SE, Issaquah, WA
- Website: Race Information
- Purpose: Raise funds for programs that serve students attending all 27 ISD schools.
Participation Details
- All Ages: We welcome participants of all ages and abilities.
- Parking: Convenient onsite parking is available.
- Course: Professionally chip-timed, flat, paved, out-and-back route.
- Costumes: Festive costumes are encouraged, so bring your creativity!
Registration Information
- Sell Out: This event sells out every year, so don’t wait to register!
- Deadline: Every registration submitted by October 11th receives the option of a 2026 Monster Mash technical race tee & medal.
- No-Shirt Registration: Option to waive the shirt for a reduced fee to support students even more.
- Benefits: Registrants are eligible for placement awards, receive free event photos, and raffle tickets for prizes!
Course map
Hotels for race weekend
Live prices near the start line, Oct 23 – 25, 2026.
Train with a club
Run clubs near Issaquah to train with before race day.
See all run clubs near Issaquah →
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.