Monster Mash Run
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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.
07/30/2026
👻 RUN. WALK. DRESS UP. MONSTER MASH. 🎃
Monster Mash Run is calling all runners, walkers, families, and Halloween lovers! Choose your distance, plan your costume, and join us for a Halloween race day packed with miles, memories, and plenty of Monster Mash fun. 💀🏃♀️🏃♂️
Register now: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
07/23/2026
🎃 100 DAYS TILL HALLOWEEN = 100 DAYS TILL MONSTER MASH RUN! 💀🏃♀️🏃♂️
The countdown is officially on! This Halloween, grab your costume, gather your crew, and get ready to run, walk, and mash your way through the 5K, 10K, or Kids K at Monster Mash Run!
The costumes. The finish line. The post-race fun. Halloween will be here before you know it! 👻
🔗 Register today: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
07/16/2026
💀 Costumes encouraged. Good times guaranteed. Miles waiting to be crushed! 🎃 Whether you’re racing the 5K, taking on the 10K, or bringing the little monsters out for the Kids K, Monster Mash Run is the perfect way to celebrate Halloween!
Grab your crew and register today: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
07/09/2026
🎃 Get ready to run, walk, and Monster Mash your way through Halloween! Join us for the 5K, 10K, or Kids K and enjoy costumes, race-day fun, and a spooktacular celebration at the finish line. 👻💀
Register today: https://runsignup.com/Race/TX/Houston/MonsterMashHouston
06/25/2026
🎃 The countdown to spooky season starts now 👻
Grab your costume, lace up your running shoes, and join us for the Monster Mash this fall! 🕸️🏃
From festive race swag to Halloween-themed fun on course, this is the perfect race for runners of all ages 🍂🧡
✨ 5K • 10K • Kids K
🏅 Finisher medals for all participants
👟 Walkers welcome too!
Register today before prices increase:
https://runsignup.com/Race/TX/Houston/MonsterMashHouston
06/18/2026
🎃🏅 Calling all ghosts, goblins, and runners!
Monster Mash is back with Halloween fun for the whole family 👟🕸️
🍂 5K • 10K • Kids K
👻 Festive swag & finisher medals
🧡 Costumes highly encouraged
Don’t miss one of Houston’s favorite fall race traditions!
Register today:
https://runsignup.com/Race/TX/Houston/MonsterMashHouston
06/11/2026
🕸️ A different kind of Halloween tradition 🕸️
Cooler weather, spooky season vibes, and a race morning filled with costumes, community, and fun 🎃🏃
Whether you're running the 5K, 10K, or Kids K, Monster Mash is the perfect way to celebrate fall in Houston 🍁
Register now 👻
https://runsignup.com/Race/TX/Houston/MonsterMashHouston
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
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2032 Karbach Street
Houston, TX
77092