Monster Mash Run
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
Monster Mash Run is a Halloween-themed running event in Houston, presented by Karbach Brewing Co. It takes place at Karbach Brewing Co., 2032 Karbach St, Houston, TX 77092. The race offers 5K and 10K distances for in-person runners, plus a KidsK/Family Walk and virtual options.
Participants receive a chip-timed race, a Monster Mash finisher medal, and a unisex T-shirt; KidsK includes a shirt and medal. The day blends sport with celebration—costumes are encouraged, with post-race food, drinks, music, and a family-friendly atmosphere. It’s part of the Houston Holiday Series, running through the city in full costume. Visit the organization's website for the most recent information.