Spooky Sprint - Denver 2026
- Date
- Saturday, October 3, 2026
- Start time
- 8:00 AM start (Denver)
- Location
- Littleton, Colorado
- Entry fee
- From Free · goes up to $48 on Oct 2, 2026
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
Registration is open.
We earn a small commission when you register through this link, at no cost to you. Details
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Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 10K | 10K | Oct 3, 20268:00 AM | $44$48 after Oct 2, 2026 | – |
| 1 Mile | 1 Mile | Oct 3, 20268:00 AM | $25 | – |
| 5K | 5K | Oct 3, 20268:00 AM | $44$48 after Oct 2, 2026 | – |
| Half Marathon | Half Marathon | Oct 3, 20268:00 AM | $79$85 after Oct 1, 2026 | – |
| Kids Dash | Kids | Oct 3, 20268:00 AM | $20 | – |
| Running Buddy Half Marathon | Half Marathon | Oct 3, 20268:00 AM | Free | – |
| Spooky Sprint 10K 2027 | 10K | Oct 3, 20268:00 AM | $44$48 after Oct 2, 2026 | – |
| Spooky Sprint 5K 2027 | 5K | Oct 3, 20268:00 AM | $44$48 after Oct 2, 2026 | – |
| Spooky Sprint Half Marathon 2027 | Half Marathon | Oct 3, 20268:00 AM | $79$85 after Oct 1, 2026 | – |
| Volunteer THEN Run | – | Oct 3, 20268:00 AM | $20 | 5 |
| VirtualVirtual | – | Oct 3, 20268:00 AM | $45 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The 10K fee goes up to $48 on Oct 2, 2026.
Race day planning
Entry fee schedule
- 10K and 5K: $44 until Oct 2, then $48 until Oct 3.
- 1 Mile: $25 until Oct 3.
- Half Marathon: $79 until Oct 1, then $85 until Oct 3.
- Kids Dash: $20 until Oct 3.
Online registration closes Oct 3, 2026, unless the race fills first.
How the price compares
At $79, entry is about 32 percent above a typical half marathon in Colorado, which costs $60 right now.
What a typical finish looks like
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.
Light and altitude
Sunrise on race morning is at about 6:56 AM, and the 10K starts at 8:00 AM. The start sits about 5,550 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.
Start location and course
Chatfield State Park, Littleton, CO 80128
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2025 results
All results (3 years)5K
1/2 Marathon
10K
Aggregated from official results for Spooky Sprint - Denver. Individual finisher names are not stored here.
How fast do you need to be at Spooky Sprint - Denver?
At the 2025 5K, the fastest tenth finished in 25:19 or better, the top quarter in 31:44, and half the field in 39:05; the last tenth came in after 1:00:35.
At the 2025 1/2 Marathon, the fastest tenth finished in 1:46:05 or better, the top quarter in 1:57:24, and half the field in 2:15:32; the last tenth came in after 2:55:54.
At the 2025 10K, the fastest tenth finished in 52:38 or better, the top quarter in 57:54, and half the field in 1:05:25; the last tenth came in after 1:21:01.
| Age | Women | Men |
|---|---|---|
| 20-29 | 33:27 | 29:26 |
| 30-39 | 29:29 | 23:10 |
| 50-59 | 38:55 | 32:44 |
| 60-69 | 32:06 | n/a |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2025.
Finishers by year
Up 181 percent since 2023.
All events combined, from official results.
Spooky Sprint - Denver 5K year by year
From 2023 to 2025, the field went from 38 to 82 finishers, and the median time rose from 32:28 to 39:05.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2025 | 82 (-40%) | 39:05 | under 25:19 | 19:45 |
| 2024 | 136 (+258%) | 35:33 | under 27:16 | 21:09 |
| 2023 | 38 | 32:28 | under 25:39 | 23:19 |
From each year's official results for the 5K; virtual options are left out.
How fast is it?
Slower than most Colorado 5Ks
The fastest quarter of the 2025 5K field finished under 31:44, against 29:37 in a typical Colorado 5K, so times here run 7 percent slower.
- Half Marathon: About average for Colorado half marathons. The fastest quarter of the 2025 half marathon field finished under 1:57:24, against 1:56:43 in a typical Colorado half marathon, so times here are about average.
- 10K: Slower than most Colorado 10Ks. The fastest quarter of the 2025 10K field finished under 57:54, against 55:16 in a typical Colorado 10K, 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.
Typical race-day weather
Around October 3 the day usually runs from 46°F at dawn to 78°F in the afternoon, with measurable rain on about 8% of days. Cold snaps dip to 41°F and hot years reach 86°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.
Race details
- Where
- Chatfield State Park, Littleton, CO 80128Map
- Course
- Road
- Start elevation
- About 5,550 feet
- Included with entry
- T-Shirt
- Donations
- Accepted when you register
- Distances
- 1 Mile, 5K, 10K, Half Marathon, Kids
- Editions
- 2026 (Oct 3, 2026), 2025 (Sep 14, 2025), 2024 (Oct 5, 2024), 2023 (Oct 7, 2023)
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is Spooky Sprint - Denver?
- Saturday, October 3, 2026, starting at 8:00 AM.
- How much does it cost?
- Entry starts at Free before processing fees, and rises to $48 on Oct 2, 2026.
- When does registration close?
- Online registration closes Oct 3, 2026, unless the race fills first.
- Is the entry fee high for Colorado?
- At $79, entry is about 32 percent above a typical half marathon in Colorado, which costs $60 right now.
- Do runners get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances can I run?
- 1 Mile, 5K, 10K, Half Marathon, Kids.
- How big is it, and how fast?
- In 2025, 82 runners finished the 5K; the median finish was 39:05 and the winner ran 19:45.
- Is it a fast course?
- The fastest quarter of the 2025 5K field finished under 31:44, against 29:37 in a typical Colorado 5K, so times here run 7 percent slower.
- Where does it start?
- Chatfield State Park, Littleton, CO 80128.
From the organizers
Join us for the annual Spooky Sprint 5k/10k & Half Marathon! A fun, Halloween-themed event that is perfect for the whole family.
The fun includes -
Great Swag - designer shirt & custom medal
Chip-timing with live results and awards
Free photos
Delicious Treats waiting at the finish line
Plenty of fun!
Grab your friends and family, you are not going to want to miss this one!
Can't make the race? No problem! We offer a virtual race option where you can run anywhere, at any time, and still earn the fun swag!
*Youth-based pricing for the 5k/10k, 12 & Under are only $17!
Half Marathon registration includes a custom bib, designer shirt, awesome finisher medal!