2026 Monster Mash Run

Celebrate Halloween with one of Houston’s most frightfully fun traditions — Monster Mash Run! 🎃
Join Houston Running Co. for a spook-tacular morning of running, costumes, and post-race fun at Karbach Brewing Co. As Race 7 of the Houston Holiday Series, Monster Mash brings together runners of all ages for a festive race experience filled with great vibes, seasonal spirit, and plenty of treats along the way.

Whether you’re chasing a PR, running with friends, or showing off your best costume, Monster Mash is the perfect way to kick off Halloween weekend. Costumes are highly encouraged, and the celebration doesn’t stop at the finish line!

October 31, 2026
7:30AM – 5K / 10K Start
9:15AM – Award Ceremony
9:30AM – Kids & Family 1K Start

Also check out other Sports events in Houston, Kids events & activities in Houston.