Golden, CO | Sunday, November 1, 2026Registration OpenPatrioticFun / Novelty
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!
Available Distances
Awards & Prizes
Participant Giveaway
13.1 Miles: Beanie
10K: Beanie
5K: Beanie
Registration & Pricing
Distance
Price
Opens
Closes
13.1 Miles
$65.00
Nov 2
May 2
$70.00
May 2
Aug 2
$80.00
Aug 2
Oct 19
$85.00
Oct 19
Nov 1
10K
$45.00
Nov 2
May 2
$50.00
May 2
Aug 2
$60.00
Aug 2
Past Results
10K
Year
Finishers
Median Time
Fastest Time
2025
191
1:09:51
36:28
2024
153
1:06:59
39:00
5K
Year
Finishers
Median Time
Fastest Time
2025
205
37:11
19:56
2024
212
38:54
17:41
Half Marathon
Year
Finishers
Interested in this race?
Oct 19
$65.00
Oct 19
Nov 1
5K
$35.00
Nov 2
May 2
$40.00
May 2
Aug 2
$50.00
Aug 2
Oct 19
$55.00
Oct 19
Nov 1
Schedule
Saturday, October 26 12:00-3:00p Early packet pick-up Location: TBD Sunday, October 27 8:00a Packet pick-up open 8:00a Costume contest open (at event banner) 8:45a Half marathon pick-up/registration close 9:00a Half marathon start 9:15a 10K pick-up and registration close 9:30a 10K start/5K pick-up and registration close 9:30a Costume contest close 9:45a 5K start Note that packet pickup closes 15 minutes before the start of each distance and you must start within 5 minutes of the distance start t