This is without a doubt the BEST Halloween-themed run and after-party in town! Join over 2000 Monster Mashers hit the streets of Houston in full costume!
Our team looks forward to this post-race party all year... join us! The annual Monster Mash 5k/10k and Candy Corn Kids K Runs are a Houston area holiday tradition! This costume run has grown in size from a couple hundred in 2007 to as many as 2,000 in recent years. This large costumed run is a ton of fun for the entire family and beer from Karbach Brewery for those 21 and over.
06/04/2026
🎃👟 Fall race season starts here!
Join us for the Monster Mash and enjoy festive race swag, Halloween-themed fun, and a morning full of miles and memories 🍂
🧡 5K • 10K • Kids K
👻 Costumes encouraged
🏅 Finisher medals for all participants
Register today: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
05/28/2026
👻 Calling all ghouls, goblins, and runners! Monster Mash Houston is the perfect way to celebrate spooky season with fun miles, awesome swag, and Halloween energy from start to finish 🎃
Register now: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
05/21/2026
🎃 The countdown to Monster Mash is on! Join us for festive race day vibes, costume contests, fall-themed fun, and one unforgettable morning in Houston 👻
Register here: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
05/14/2026
Lace up for Houston’s spookiest race tradition at Monster Mash! Costumes, fall vibes, great swag, and a fun-filled morning at Karbach Brewing Co. await 👻
Register now: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
05/06/2026
🎃 Houston’s favorite Halloween race is back! Grab your costume and join us for Monster Mash at Karbach Brewing Co. with 5K, 10K, Kids K, festive vibes, and the ultimate post-race party 👻
Register now: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
04/29/2026
Run spooky. Run festive. Run Monster Mash. 🎃
Join us this Halloween for one of Houston’s favorite themed races.
https://runsignup.com/Race/TX/Houston/MonsterMashHouston
04/14/2026
Only 200 days until Halloween. 🎃
Perfect time to sign up for the Monster Mash.
https://runsignup.com/Race/TX/Houston/MonsterMashHouston
04/01/2026
Ghosts, goblins, and great vibes 👻🎉
Monster Mash Houston is ready to bring the fun — costumes encouraged!
👉 https://runsignup.com/Race/TX/Houston/MonsterMashHouston
03/25/2026
Bring the whole crew for Halloween fun! 👨👩👧👦🎃
Monster Mash Houston has something for every ghoul and goblin.
👉 https://runsignup.com/Race/TX/Houston/MonsterMashHouston
03/18/2026
Run like a monster… walk like a zombie! 🧟♀️
Monster Mash Houston registration is OPEN!
👉 https://runsignup.com/Race/TX/Houston/MonsterMashHouston