Longmonster Dash 5k
About this race
Something spooky this way runs! Lace up your monster clogs and join the Longmont Area Chamber of Commerce for the inaugural Longmonster Dash, a Halloween-themed 5K and costume contest on Saturday, October 17, 2026.
Runners, walkers and broom fliers of all paces are welcome, with pumpkin trophies for overall race winners and age-group awards. You don't want to miss the costume contest, with witch trophies given to our not so lucky winners, including Best Overall, Best Family, Best Group, and Spookiest Costume. Stick around (if you dare) for our finish expo and connect with local businesses and community organizations.
Whether you’re racing the clock, your fellow ghoul or dressing to win, the Longmonster Dash is a morning built around community, connection, and Longmont pride!
The 5k will be held at the Dickens Farm Nature Area, located between Main St. and Martin St. on Boston Ave. Parking information and a map of the event will be sent prior to the race.
Packet pickup begins at 7:30 am. The chip-timed race begins at 8:30 am. Be a part of something bigger this Halloween at the Longmonster Dash 5K!
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Running
Longmonster Dash 5k
Typical race-day weather
Based on 1 year of historical conditions on this event's race dates in Longmont.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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🏃 Plan Your Next Race in Longmont
Find upcoming events by distance:
- Longmont 5K Races 6 races
- Longmont Running Calendar 2026 8 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 8 Longmont events
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