Half Marathon10K5KRegistration open

All-Out Kooky-Spooky

Sunday, November 1, 2026Golden, Colorado

Entry from: $35
Days to go: 26

At a glance

Date: Nov 1, 2026
Location: Golden, Colorado
Distances: Half Marathon, 10K, 5K
Registration: Registration open until Nov 1, 2026, via runsignup.com
Official site: runsignup.com
Listed from: RunSignUp
Last checked: Oct 5, 2026

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About this race

From the base of Table Mountain and Colorado's spectacular foothills, All-Out Multicourse presents our 15th annual Kooky-Spooky from Jefferson County's NAAC Stadium… easily accessible from several nearby highways. Along with its Endless Series sidekick in March, Spring Fever, these 5K, 10K & Half Marathon courses will hug the shores of Arvada's Blunn Reservoir via the Ralston Creek Trail and will challenge the beginner and veteran athlete alike! Of course, we'll still be celebrating the Halloween spirit so re-use your Halloween costume for our official costume contest. And especially revel in the extra hour of sleep you get as Nov. 1 is the end of daylight savings time!

Key dates

Registration opens

Nov 2, 2025

Tier 1 ends

May 2, 2026

Tier 2 ends

Aug 2, 2026

Tier 3 ends

Oct 19, 2026

13d

Tier 4 ends

Oct 29, 2026

23d

Registration closes

Nov 1, 2026

26d

Race day

Nov 1, 2026

26d

Tier 4 ends

Nov 1, 2026

26d

Pricing

Half Marathon

Tier 3, then $85 from Oct 19, 2026

$80

10K

Tier 3, then $65 from Oct 19, 2026

$60

Tier 3, then $55 from Oct 19, 2026

$50

VIRTUAL Half Marathon

Tier 3, then $55 from Oct 19, 2026

$50

VIRTUAL 10K

Tier 3, then $55 from Oct 19, 2026

$40

VIRTUAL 5K

Tier 3, then $40 from Oct 19, 2026

$35

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Straight-line distance

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