Longmonster Dash 5k
Updated
Saturday, October 17, 2026, first start 8:30 AM, in Longmont (Boston Ave. between Main and Martin). Distances: 5K.
- Date
- Saturday, October 17, 2026
- Start time
- 8:30 AM (earliest wave)
- Location
- Boston Ave. between Main and Martin, Longmont, CO 80504
- Area
- Fort Collins & Loveland, Denver & Boulder
- Distances
- 5K
- Course
- Road or path
- Price
- See the registration page
- Next price increase
- None published
- Registration
- Closed online. Opened August 19, online signup closes Saturday, October 17, 2026
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details.
Course and race notes
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.
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.