In 26 days · Sat, Oct 31, 2026
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Saturday, October 31st, 2026
1020 W. 18th Street, Weslaco TX
10K · 5K · 1 Mile
66–85°F · low rain risk
See last 10 years
On this date: rain 4 of the last 10 years
2025
53–82°F
dry
2024
74–91°F
rain
2023
50–59°F
rain
2022
68–81°F
rain
2021
66–89°F
dry
2020
54–81°F
dry
2019
49–58°F
rain
2018
75–88°F
dry
2017
70–82°F
dry
2016
70–90°F
dry
Best months to race in Texas →
Race-day ready
Everything but the shoes.
Real running socks, a bib belt, anti-chafe — the cheap upgrades that matter.
About this race
MONSTER DASH IS COMING TO WESLACO, TX!!!
Get ready for a spooktacular morning of fitness, fun, and fall festivities at the Inaugural Monster Dash 1 Mile, 5K, & 10K at Harlon Block Sports Park! Whether you’re chasing a personal record, walking with family, or showing off your Halloween costume, Monster Dash is designed to be an unforgettable experience for runners and spectators of all ages!
EVENT FEATURES:
-Chip Timed
-Race Themed Custom Finisher Medals
-Fully Sublimated Dri-fit Participant T-Shirt (if registered by deadline)
-Overall Top 3 Male/Female Awards. Trophies for Overall Male and Female.
-Age Group Awards
Male/Female in the 5K and 10K: 1-7, 8-14, 15-19, 20-29, 30-39, 40-49, 50-59, 60-64, 65+
-Team, Military and First Responder Discounts Available
-Costume Contest
-Trick-or-Treat Vendor Trail for the Little Monsters
-Kids Activities & Family Fun
-Live Music Entertainment by Pappa Bear & The Cubs, headlined by Reserve
-Vendor Market & Food Trucks
-Dog Costume Contest
-Pumpkin Patch Photo Area
This isn’t just a race… it’s a full Halloween-themed festival experience designed to bring the Rio Grande Valley community together while supporting local businesses, organizations, and healthy living! Gather your friends, your family, your coworkers, your school organizations, and your running crew and come be part of what is sure to become a new annual tradition!
Stay tuned for more event details...the monsters are just getting started!!!
Course map
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