
All-Out Kooky-Spooky
Golden, CO • November 1, 2026
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!
Other Races by All-Out Multicourse

All-Out Beat the Heat
April 18, 2026
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All-Out Summer Breeze
June 13, 2026
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All-Out Dog Days
July 11, 2026
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All-Out Runapalooza
August 8, 2026
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All-Out Fall Fest
September 19, 2026
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All-Out Fa La La
December 5, 2026
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All-Out Polar Prowl
January 9, 2027
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All-Out Mardi Crawl
February 6, 2027
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More Races in Golden, CO
Halloween Races in Colorado

Spooky Sprint - Denver
October 3, 2026
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Apex Foundation Trick or Trot 5K & Halloween Hunt
October 24, 2026
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Ghosts and Goblins 5K/10K
October 25, 2026
Denver, CO

Boos & Brews Halloween 5k @ Number 38
October 31, 2026
Denver, CO

Foundry Halloween 5k
October 31, 2026
Steamboat Springs, CO

I Ain't Scared (of 5k)
October 31, 2026
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