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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| Half Marathon | Half Marathon | Nov 1, 20269:00 AM | $80$85 after Oct 19, 2026 | – |
| 10K | 10K | Nov 1, 20269:30 AM | $60$65 after Oct 19, 2026 | – |
| 5K | 5K | Nov 1, 20269:45 AM | $50$55 after Oct 19, 2026 | – |
| VIRTUAL 10KVirtual | 10K | Nov 1, 20269:00 AM | $40$55 after Oct 19, 2026 | – |
| VIRTUAL 5KVirtual | 5K | Nov 1, 20269:00 AM | $35$40 after Oct 19, 2026 | – |
| VIRTUAL Half MarathonVirtual | Half Marathon | Nov 1, 20269:00 AM | $50$55 after Oct 19, 2026 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The Half Marathon fee goes up to $85 on Oct 19, 2026.
Online registration closes Nov 1, 2026, unless the race fills first.
At $80, entry is about 33 percent above a typical half marathon in Colorado, which costs $60 right now.
A typical finisher at a half marathon in Colorado runs 2:12:38, about 10:07 a mile, based on 60 races with published results. Women typically finish in 2:19:55 and men in 2:03:31.
Sunrise on race morning is at about 6:29 AM, and the Half Marathon starts at 9:00 AM. The start sits about 7,980 feet above sea level, high enough that most runners from lower ground run noticeably slower.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
19500 W 64th Pkwy, Golden, CO 80403
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
Aggregated from official results for All-Out Kooky-Spooky. Individual finisher names are not stored here.
At the 2025 Half Marathon, the fastest tenth finished in 1:47:19 or better, the top quarter in 2:02:58, and half the field in 2:21:41; the last tenth came in after 2:55:18.
At the 2025 5K, the fastest tenth finished in 25:37 or better, the top quarter in 29:57, and half the field in 37:11; the last tenth came in after 54:50.
At the 2025 10K, the fastest tenth finished in 51:57 or better, the top quarter in 57:37, and half the field in 1:09:51; the last tenth came in after 1:27:15.
| Age | Women | Men |
|---|---|---|
| Under 20 | 2:13:03 | 1:45:50 |
| 20-29 | 1:50:44 | 1:45:37 |
| 30-39 | 1:40:32 | 1:35:06 |
| 40-49 | 1:58:09 | 1:40:18 |
| 50-59 | 2:29:10 | 1:45:14 |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
Where a finish time would have placed in 2025.
Up 88 percent since 2023.
All events combined, from official results.
From 2023 to 2025, the field went from 186 to 261 finishers, and the median time rose from 2:18:51 to 2:21:41.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2025 | 261 (-2%) | 2:21:41 | under 1:47:19 | 1:19:24 |
| 2024 | 267 (+44%) | 2:12:20 | under 1:45:15 | 1:21:49 |
| 2023 | 186 | 2:18:51 | under 1:47:53 | 1:27:53 |
From each year's official results for the Half Marathon; virtual options are left out.
Slower than most Colorado half marathons
The fastest quarter of the 2025 half marathon field finished under 2:02:58, against 1:56:43 in a typical Colorado half marathon, so times here run 5 percent slower.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
Around November 1 the day usually runs from 34°F at dawn to 56°F in the afternoon, with measurable rain on about 15% of days. Cold snaps dip to 25°F and hot years reach 71°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
What the organizers of All-Out Kooky-Spooky cover on their registration page, in brief.
Schedule and packet pickup
We look forward to seeing you at Kooky-Spooky! Here's all the details that you need for a safe and fun event. Packet pickup. Early packet pickup is Saturday, 12-3p at The Spot Golden, 1391 Brickyard Rd, Golden CO 80403. Packet pickup opens…
Schedule and packet pickup
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…
Course
Jefferson County's NAAC Stadium. 19500 W 64th Pkwy, Golden, CO 80403. Wheelchair/Stroller Access: All are welcome, but there is one short unpaved section of the course you should consider before registering. Please contact us for more…
Shirt and medal
♦ RRCA Certified Race Director— Organization you can count on! With hundreds of events under the belt of our director and a staff with 25+ years experience, your event will run smoothly. (Ha! No pun intended). ♦ A Full-On Costume Contest—…
Awards
You can't have a Halloween event without a costume contest! You can win a free race! Dress in your 'G' rated Halloween best then swing by the awards tent before you race to enter! The Rules. How to Enter. No pre-registration necessary…
Organize this race? Add details or a correction
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!