Louisville Trail Race
Nov 14Louisville, COHalf Marathon, 10K +1
Also a 5K, 10 mi from I Ain't Scared (of 5k), registration open
5KRegistration open
I Ain't Scared (of 5k)
Thornton, Colorado
- Entry
- $45
- Days to go
- 25
At a glance
- Date
- Oct 31, 2026
- Location
- Thornton, Colorado
- Distances
- 5K
- Registration
- Registration open until Oct 31, 2026, via runsignup.com
- Official site
- runsignup.com
- Listed from
- RunSignUp
- Last checked
- Oct 5, 2026
Plan this race for free
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planAbout this race
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!
Key dates
Registration opens
Nov 1, 2025
Tier 1 ends
Dec 1, 2025
Tier 2 ends
Mar 1, 2026
Tier 3 ends
Sep 1, 2026
Tier 4 ends
Oct 18, 2026
Tier 5 ends
Oct 30, 2026
Registration closes
Oct 31, 2026
Race day
Oct 31, 2026
Tier 6 ends
Oct 31, 2026
Pricing
Current price
$45
Tier 4
Ends
Oct 18, 2026
Price progression
Tier 1
$29Nov 1, 2025
Tier 2
$35Dec 1, 2025
Tier 3
$40Mar 1, 2026
Tier 4
$45Sep 1, 2026
Tier 5
$50Oct 18, 2026
Tier 6
$60Oct 30, 2026
Email me updates about I Ain't Scared (of 5k)
Registration openings and major changes, like a new date or a cancellation.
Entry transfers
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Race planning
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