All-Out Kooky-Spooky logo
Running

All-Out Kooky-Spooky

Date
November 1, 2026
Distance
Half Marathon · 10K · 5K & more
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From the Organizer

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!

Events

Half Marathon9 AMRegister →
10K9:30 AMRegister →
5K9:45 AMRegister →
VIRTUAL Half Marathon9 AMRegister →
VIRTUAL 10K9 AMRegister →
VIRTUAL 5K9 AMRegister →

Weather

Typical Conditions

It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.

Typical High

57°

Typical Low

32°

Chance of Rain

16%

Based on US Climate Normals data from Lakewood, 6 mi from the venue.

Sunrise 6:30 AMSunset 5:00 PMDaylight 10h 30m

Host City

About Golden, CO

Elevation

7,216 ft

Nearest Airport

BJC

Rocky Mountain Metropolitan Airport · 15 mi

Major Hub

DEN

Denver International Airport · 31 mi

Time Zone

Mountain Time

From Endurance Grid

Line up lodging and travel early to lock in your race weekend.

Race Location

Your Next Start Line

What Are You
Waiting For?

Every finish line starts with a single decision. Claim your spot at All-Out Kooky-Spooky, put it on the calendar, and turn “someday” into a start date.

146

Days to train

Race
All-Out Kooky-Spooky
Date
November 1, 2026

From Endurance Grid

About This Sport

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.

Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.

Read the Guide

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the All-Out Kooky-Spooky?
All-Out Kooky-Spooky is a running race held in Golden, Colorado on November 1, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
When and where is the All-Out Kooky-Spooky?
Sunday, November 1, 2026 in Golden, Colorado at 19500 W 64th Pkwy, Golden, CO. Check the event page for exact start times and wave schedules.
How do I register for the All-Out Kooky-Spooky?
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

All-Out Kooky-Spooky

Nov 1, 2026

Register →