MCCM Monster Mash 5k
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Event overview
The MCCM Monster Mash 5k & Creature Crawl 1k takes place on Saturday, October 25, 2025, at Howard Amon Park at the Finger Nail in Richland, WA. The event is presented by Hanford Tanks and supports the Mid-Columbia Children’s Museum. The organizer describes this as the 3rd annual Monster Mash and Creature Crawl.
- 5k: Monster Mash (categories for ages 13+ and for children 5-12)
- 1k: Creature Crawl (children 0-12 and adult chaperone option)
Features, prices, and rules
Event pricing listed on the event page is $25 for the adult 5k, $10 for the child 5-12 5k, $10 for the child 1k, and $1 for an adult chaperone in the 1k. The program includes face painting for child registrants, trick-or-treating, STEM-inspired activity booths, hands-on experiments, and participant vouchers for cider/coffee and a donut for 5k participants and 1k children. Costumes are encouraged; the organizer notes safety guidelines such as no motorized scooters, rollerblades, or skateboards, strollers are welcome, service animals only, and children must be supervised. Sponsors listed include Tradewind LLC, Greg Brown Ortho, Reser’s, Atomic Shirt Factory, Bananaface Party, and Gold’s Gym WA. Visit the organization's website for the most recent information.