5K 10K Half MarathonKids

Autumn Run 2027

Date: Saturday, September 18, 2027
Start time: 9:00 AM start (Denver)
Location: Buena Vista, Colorado
Entry fee: From Free · goes up to $105 on Jul 1, 2027
Included with entry: Includes a shirt
Fundraising: Takes optional donations when you register

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Official race website

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Events and entry fees

Event	Distance	When	Entry fee	Cap
Family Fun Run	Kids	Sep 18, 20279:00 AM	Free	–
Half Marathon	Half Marathon	Sep 18, 20279:15 AM	$95$105 after Jul 1, 2027	150
10K	10K	Sep 18, 20279:30 AM	$55$65 after Jul 1, 2027	100
5K	5K	Sep 18, 20279:30 AM	$30$35 after Jul 1, 2027	100

Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.

Race day planning

Entry fee schedule

Family Fun Run: Free until Sep 18.
Half Marathon: $95 until Jul 1, then $105 until Sep 18.
10K: $55 until Jul 1, then $65 until Sep 18.
5K: $30 until Jul 1, then $35 until Sep 18.

Online registration closes Sep 18, 2027, unless the race fills first.

How the price compares

At $95, entry is about 58 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 6:47 AM, and the Family Fun Run starts at 9:00 AM. The start sits about 10,530 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

Mc Phelemy Park, U S. 24, Buena Vista, CO 81211

Directions to the start

The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.

Typical race-day weather

Around September 18 the day usually runs from 34°F at dawn to 63°F in the afternoon, with measurable rain on about 20% of days. Cold snaps dip to 30°F and hot years reach 69°F.

Based on 76 days within a week of the date over the last 6 years, from historical weather for the start area. Not a forecast.

Race details

Where: Mc Phelemy Park, U S. 24, Buena Vista, CO 81211Map
Course: Road
Start elevation: About 10,530 feet
Included with entry: Triblend Shirt
Donations: Accepted when you register
Distances: 5K, 10K, Half Marathon, Kids
Editions: 2027 (Sep 18, 2027), 2026 (Sep 19, 2026), 2025 (Sep 20, 2025), 2024 (Sep 21, 2024), 2023 (Sep 16, 2023), 2022 (Sep 17, 2022)

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Quick answers

When is Autumn Run?: Saturday, September 18, 2027, starting at 9:00 AM.
How much does it cost?: Entry starts at Free before processing fees, and rises to $105 on Jul 1, 2027.
When does registration close?: Online registration closes Sep 18, 2027, unless the race fills first.
Is the entry fee high for Colorado?: At $95, entry is about 58 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?: 5K, 10K, Half Marathon, Kids.
Where does it start?: Mc Phelemy Park, U S. 24, Buena Vista, CO 81211.