
Longmonster Dash 5k is a running race on October 17, 2026 in Longmont, CO, with an entry fee of $40.
Something spooky this way runs! Lace up your monster clogs and join the Longmont Area Chamber of Commerce for the inaugural Longmonster Dash 5K & Costume Contest on Saturday, October 17, 2026.
Runners, walkers, and broom fliers of all paces are welcome to join the fun. Race for pumpkin trophies and age-group awards, or come dressed to impress for a chance to take home one of our witch trophies in categories like Best Overall, Best Family, Best Group, Spookiest Costume, and more. After you cross the finish line, stick around, if you dare, for our finish expo featuring local businesses and community organizations.
The race will be held at Dickens Farm Nature Area, located between Main St. and Martin St. on Boston Ave. Packet pickup begins at 7:30 AM, and the chip-timed 5K starts at 8:30 AM. Parking information and an event map will be sent before race day.
Whether you’re racing the clock, your fellow ghoul, or dressing to win, come be part of a frightfully fun morning of community and Longmont pride!
Live forecast from the U.S. National Weather Service.
Race day
Saturday, 10/17
High
73°
Low
40°
Conditions
Sunny
Chance of Rain
2%
Wind
3 mph
City Elevation
4,947 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 17 mi
Major Hub
DEN
Denver International Airport · 30 mi
Time Zone
Mountain Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Every finish line starts with a single decision. Claim your spot at Longmonster Dash 5k, put it on the calendar, and turn “someday” into a start date.
5
Days to train
Create a free account to find and save races like this to your athlete profile.
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.
Longmonster Dash 5k
Oct 17, 2026