# MCCM Monster Mash 5k & Creature Crawl 1k - **When:** Fri, Oct 23, 2026 · 7:00 PM CDT - **Where:** Howard Amon Park at the Finger Nail, Richland, WA, 99352 - **Event page:** https://runthis.run/event/rs-151402-mccm-monster-mash-5k-creature-crawl-1k ## Registration Register on the event's own site: https://runsignup.com/Race/WA/Richland/MCCM?aflt_token=58wBqomPr6bPwa1YDhuKo0IQvrNCjzTq ## Description 🎃 4th Annual Monster Mash 5K & Creature Crawl 1K 👾 Join the Mid-Columbia Children's Museum for the 4th Annual Monster Mash 5K & Creature Crawl 1K, a family-friendly Halloween event bringing 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! 📅 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 the future Mid-Columbia Children's Museum 🎟️ Registration Registration opens at 9:00 AM on September 1, 2026!  Register early and join us for one of our favorite family events of the year. Early registration ends October 1st! 💙 Foster & Kinship Families Discounted registration is available for foster and kinship families. To receive a special registration code, please reach out to us at info@mccmuseum.org. We want Monster Mash to be an event all families in our community can enjoy! 🎃👾 Race Day Rules 🎃 Costumes encouraged — keep them safe to run or walk in! 👶 Strollers welcome — please start toward the back. 🐾 Please leave pets at home (service animals welcome). 👾 Keep little monsters supervised. ➡️ Stay on the marked course and follow volunteer directions. ❤️ Be kind, have fun, and cheer each other on! Additional race-day details, including check-in and start times, will be shared closer to the event. We can't wait to celebrate another year of community, creativity, curiosity, and fun with you! --- Source: [https://runthis.run/event/rs-151402-mccm-monster-mash-5k-creature-crawl-1k](https://runthis.run/event/rs-151402-mccm-monster-mash-5k-creature-crawl-1k) — data from Run This (runthis.run).