Race Discovery
MCCM Monster Mash 5k & Creature Crawl 1k
MCCM Monster Mash 5k & Creature Crawl 1k logo

MCCM Monster Mash 5k & Creature Crawl 1k

Richland, Washington, United States View on map
Oct 24, 2026 (America/Los_Angeles local time)
Running

About this race

🎃 4th Annual Monster Mash 5K & Creature Crawl 1K 👾


Save the Date: October 24, 2026 Join the Mid-Columbia Children's Museum for Monster Mash 5K & Creature Crawl 1K, a family-friendly Halloween event that brings together costumes, movement, and hands-on fun in support of the future Mid-Columbia Children's Museum. Whether you're running the 5K, walking with friends, or cheering on your little monster in the Creature Crawl, there's something for everyone. Event Details
📅 Saturday, October 24, 2026
📍 Howard Amon Park | Richland, WA What to Expect
🎃 Costume-friendly 5K run/walk
👾 Creature Crawl 1K for kids and families
🔬 STEM-inspired activities
🍂 Family-friendly fall fun
❤️ Support for the future Mid-Columbia Children's Museum Registration Coming Soon
Registration will open later this summer. For now, save the date, spread the word, and start thinking about your costume! We look forward to celebrating another year of community, creativity, curiosity, and fun with you.

Pick your distance

Running

Monster Mash 5k (13+ years old)

This is an out and back course, to be completed one time. There will be a staffed drink station at the halfway/turn around mark. Prizes for the top 3 male and female racers in each category. 🏆 Registration includes FREE cider/coffee and donuts. ☕️ 🍩

Oct 24, 2026 5K 9:30 AM
$20.00
Open

Monster Mash 5k (Child 5-12 years old)

This is an out and back course, to be completed one time. There will be a staffed drink station at the halfway/turn around mark. Prizes for the top 3 male and female racers in each category. 🏆 Registration includes FREE cider/coffee, donuts, and face painting . ☕️ 🍩 🎨

Oct 24, 2026 5K 9:30 AM
$10.00
Open

Creature Crawl 1k (0-12 years old)

This is a closed loop course. Participants will be able to trick or treat throughout the course. 👻 Volunteers will be stationed throughout. Registration includes FREE cider/coffee, donuts, face painting, a swag bag with goodies and an event shirt (if registered by 10/2)! ☕️ 🍩 🎨

Oct 24, 2026 1K 10:30 AM
$10.00
Open

Creature Crawl 1k (Adult Chaperone)

This option is for accompanying adult(s) of minors participating in the 1K race. We need all persons attending the race to register and fill out the waiver.

Oct 24, 2026 1K 10:30 AM
$1.00
Open

Typical race-day weather

Based on 3 years of historical conditions on this event's race dates in Richland.

Temp (°C)
Minimum temperature (race-day average) 4.3° / Maximum temperature (race-day average) 13.2°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-day average) 0.0° / Maximum feels like — heat index / wind chill (race-day average) 13.2°
Wind (km/h)
Average wind speed (race-day average)
20.8
Precip (mm)
Average precipitation (race-day average)
1.8mm
Humidity
Average relative humidity (race-day average)
66.3%

Course

Route map and elevation profile

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 24 Richland events

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