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Monster Mash Run

Houston, Texas, United States

calendar_today 31 Oct, 2026

directions_run Running

sell $20.52 – $54.72

About the Event

The Karbach Brewing Monster Mash Run transforms Houston into a vibrant sea of creativity and excitement during the Halloween season. Participants, dubbed as "Monster Mashers," hit the streets dressed in imaginative costumes that bring the holiday spirit to life. This popular local run is celebrated for its high-energy atmosphere and culminates with an exceptional post-race party, known as one of Houston's best Halloween celebrations.
As part of the annual Houston Holiday Series, the Monster Mash Run attracts runners from all backgrounds who come together not just to compete but also to revel in a sense of community. The event offers a unique blend of spirited competition and festive camaraderie, making it an essential addition to any runner’s calendar. With its focus on inclusivity and fun, this Halloween-themed race promises an unforgettable experience for those looking to immerse themselves in the holiday spirit through running and celebration.
The Monster Mash Run stands out as a highlight within Houston's rich tradition of festive races, offering participants a chance to embrace their creativity while enjoying one of the city’s most lively post-race gatherings.

Races Offered

10K

Oct 31, 2026

straighten

Distance — 10K

terrain

Type — Running

timer

120 days remaining

sell

$54.72

5K

Oct 31, 2026

straighten

Distance — 5K

terrain

Type — Running

timer

120 days remaining

sell

$45.60

Kids + Family Fun Run

Oct 31, 2026

straighten

Distance — 1K

terrain

Type — Running

timer

120 days remaining

sell

$20.52

Weather History

These values represent the 3-year monthly averages for October in Houston.

thermostat Temperature

18.8° / 28.9°

wb_sunny Feels like

18.9° / 28.7°

light_mode Avg sunshine hours

9h 55m

water_drop Avg rainfall

2.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

11.1 km/h (Light breeze)

opacity Sweat loss rate

High

terrain Course conditions

Hard and dry surface

sunny Max UV Index

Moderate (4.8)

humidity_mid Humidity

68.1%

wb_twilight Sunrise

07:23

nightlight Sunset

18:49

About Houston

Learn more about the host city, Houston.

Houston is a sprawling port city in Southeastern Texas. An oil boom and continuing international immigration has brought explosive growth to the city, and it is now the fifth largest metropolitan area in the United States and the most diverse large city since 2021. While at first glance, the city appears to be a 9-5 central business district surrounded by a sea of suburbs and strip malls, there are many hidden gems to be discovered.