
Monster Mash Dash and Zombie Zoom is a running race on October 31, 2026 in Merced, CA, with entry fees from $20 to $55.
From the Organizer
Lace up your running shoes and join us on on October 31st for a frightfully fun day of racing!
The little monsters (ages 10 and under) kick things off at 12:00 PM with the 400 m Zombie Zoom, a quick run perfect for our youngest ghouls.
Then at 12:15 PM, the Monster Dash takes off with your choice of a timed 5K or 10K. Whether you're chasing a personal record or just out for a haunted good time, there's a distance for every runner.
Costumes are encouraged, so come dressed to scare!
Run fast! The first 100 finishers will take home a custom race medal, so don't get caught dead at the back of the pack.
Note: High schoolers in full monster costumes will be chasing and scaring during the 5K and 10K race. Options to not be chased.
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
72°
Typical Low
45°
Chance of Rain
12%
Based on US Climate Normals data from Merced, 8 mi from the venue.
Host City
City Elevation
165 ft
Nearest Airport
MCE
Merced Regional Macready Field · 2 mi
Major Hub
FAT
Fresno Yosemite International Airport · 56 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Monster Mash Dash and Zombie Zoom, put it on the calendar, and turn “someday” into a start date.
55
Days to train
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From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Monster Mash Dash and Zombie Zoom
Oct 31, 2026