Dress up and run spooky and silly at the I Ain't Scared (of 5k) in Thornton! Fun music, Halloween snacks and costumes galore!! This event only comes around once every few years when Halloween lands on a weekend. You don't want to miss it! Every racer gets a T-shirt with GLOW IN THE DARK printing and a FINISHER MEDAL!
Oct 31, 2026
Distance — 100 Yards
Type — Running
09:15
$0.00
Oct 31, 2026
Distance — 3.1 Miles
Type — Running
09:30
$29.00
These values represent the 3-year monthly averages for October in Thornton.
Thornton is a city of about 144,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies northwest of Denver in Adams and Weld counties. It is a diverse community with a strong commitment to quality of life and environmental issues.
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