Are drop bags allowed on the 50 Mile course?

Yes, drop bags are allowed on the 50 Mile course. Drop bags are available at the Bridge aid station (listed at about mile 31.5 in the guide, mile 31 in the aid table). Bags can be turned in at packet pickup or on race morning near the start. Every distance may also leave one bag at the start/finish for warm clothes; it stays there.

Are pacers allowed on the 50 Mile course?

No, pacers are not allowed on the 50 Mile course.

Ultras · US · UT

Gaspin Through The Aspens

50 Mile

On the calendar

The date is set. Entry has not opened. Registration opens January 1, 2027.

Race dateSeptember 18, 2027

Start5:00am

Whenin 337 days

First held2025

Who's going to Gaspin Through The Aspens?

I'm running itPlan your weeks and your aid station times I'm crewingWhen to leave, where to park, at every stop I'm pacing or cheeringAsk your runner for their Out Here link

Free. You can start with nothing.

Official website Aid stations Notify me if this race changes

Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.

Distance 50 Mile

Climb 11,180 ft

Descent not checked yet

High point not checked yet

Time limit not checked yet

Aid stations 8

Started not checked yet

Finished not checked yet

Finish rate not checked yet

The course

Where it goes loop · 8 aid stations

The 50 mile follows the same first 31 miles as the 50K, then branches off and heads back up the mountain onto more remote terrain, past a high alpine lake. Mill Canyon and Snake Creek are remote, with limited vehicle access, so a runner who drops there may wait several hours for a ride back.

The race

What this one is

A fall trail race in American Fork Canyon, Utah, with a 25K, a 50K and a 50 mile. All three start and finish at Tibble Fork Reservoir, climb toward the summit pass, and run mostly on single-track through the aspens when the leaves turn. Music, hot cocoa and a finisher's medal wait at the finish. Racers ride a shuttle to the start; there is no racer parking at the start/finish.

The race ran in 2025 and 2026. The 50 mile was added in 2026.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery: not checked yet

Lottery opens: not checked yet

Lottery draw: not checked yet

Field cap: not checked yet

Registration: UltraSignup ultrasignup.com

Qualifying: not checked yet

Minimum age: not checked yet

Transfers: not checked yet

Deferrals: not checked yet

Running, crewing, pacing or still deciding

How NavRun helps with Gaspin Through The Aspens Seven stations with a clock on each.

You are running it

You reach Salamander Flats, mile 25.5, before its 3:00pm cutoff, and you already knew that this morning.

An arrival time for all 7 stations, each next to its cutoff, worked out from your own training.

Start free →

You are deciding

You find out Gaspin Through The Aspens is months of work away, not years, and you start.

Put in a race you have already run. NavRun shows you where this one sits from where you are.

No account needed →

Crew access, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed: not checked yet

Vehicles per runner: not checked yet

Pacers: No docs.google.com

Muling: not checked yet

Drop bags: Yes docs.google.com

Cupless: not checked yet

Course marking: Fully Marked docs.google.com

Night running: not checked yet

Dogs: not checked yet

Headphones: not checked yet

Crew rules: There are no designated crew access points on the course. American Fork Canyon is open to the public during the event, so crew who come are subject to the same parking rules, regulations and day-use fees as any other visitor. Aid station food, water and medical supplies are for registered runners and race personnel only. docs.google.com

Pacer rules: Pacers are not permitted on any course distance. docs.google.com

Drop bag rules: Drop bags are available at the Bridge aid station (listed at about mile 31.5 in the guide, mile 31 in the aid table). Bags can be turned in at packet pickup or on race morning near the start. Every distance may also leave one bag at the start/finish for warm clothes; it stays there. docs.google.com

Cutoff philosophy: Aid station cutoffs and the course closure time are published for each distance. A runner arriving at an aid station after its cutoff stops racing, and is taken back to the finish area when transport is available. docs.google.com

Aid stations

Every stop, and what you get there ● yes ○ no ? nobody has checked – does not apply to this race

Mile	Station	Cutoff	Crew access	Bag	Pacer	Med	To next
6.10	Bridge	7:00am	○	?	?	?	5.30
11.40	Mill Canyon	9:30am	○	?	?	?	5.80
17.20	Mill Canyon	11:30am	○	?	?	?	4.80
22.00	Elk Camp	1:00pm	○	?	?	?	3.50
25.50	Salamander Flats	3:00pm	○	?	?	?	5.50
31.00	Bridge	5:00pm	○	●	?	?	8.50
39.50	Snake Creek	7:30pm	○	?	?	?	10.50
50.00	Finish Line	10:00pm	?	?	?	?	?

Same race, other lines

Other distances and other years

Other distances: 25 K (25K)
50 K (50K)

Other years: 2026

What it looks like out there

Somebody has been out there with a camera the tables say the climb is long. these say what long feels like.

One person has been out there with a camera or a microphone.

Social account

gaspinthroughtheaspens

Social account

These are other people's work and we link straight to them. Watching costs nothing and needs no account. More of them: every race we hold, on film.

Add to this page

What you know every one of these is read by a person before it changes anything

Ran this race? Tell the next runner what you know.

Nobody sees it until we have read it. No account, no sign-in.

Which distance? Leave blank if it applies to the whole race.

Which stop? Leave blank if it is not about one particular stop.

Give it a short title: Optional. Something like “Cal Street, mile 62 to 78”.

What do you wish someone had told you? Write it the way you would say it to someone at the start line.

Were you there? Optional, and it decides nothing. It only tells the next runner where this is coming from.

What year? Optional.

Your email: Optional, and never shown on the page. Only so we can ask you a question about this note.

Website: Leave this field blank.

See something wrong or out of date? Suggest an edit.

This changes nothing on the page on its own. Somebody checks it against the race first.

Which detail? Optional. Filled in for you when you start from a specific line on the page.

What does the page say now? Copy it as it appears, so we can find it.

What should it say? The corrected value.

How do you know? Required. Where it came from: the race email, the runner manual, what you saw on the day.

A link that shows it: Optional.

Or a photo of it: Optional. A screenshot or a photo of the sign works.

Were you there? Optional, and it decides nothing.

What year? Optional.

Your email: Optional, only so we can come back to you about this correction.

Which distance? Leave blank if it is about the whole race.

Which stop? Leave blank if it is not about one particular stop.

Website: Leave this field blank.

Seen a course preview or a film of this one? Send it over.

Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.

What does it show that the page cannot? Required. A line is plenty. Where the climbs are, what the footing does, what the last twenty miles look like.

Were you there? Optional, and it decides nothing.

What year? Optional.

Your email: Optional, and never shown on the page. Only so we can ask you a question about this one.

Where is it? A YouTube link, a race report, a photo gallery, whatever it is.

What kind of thing is it?

Who made it? Optional, and we credit them on the page.

Website: Leave this field blank.

Have the GPX? Send us the link.

We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.

Are you the race director? Get in touch and we'll make it right.

We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.

Where this came from. Every fact on this page records its source and when we last checked it: 78 sources for this race. Hover a source link to read the sentence it came from.

29% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.

See something wrong or out of date? Suggest an edit
Ran this race? Tell the next runner what you know
Got footage of this course? Send us the link
Are you the race director? Get in touch and we'll make it right.
Anything else: [email protected]

Ultras change. We will tell you when this one does.

Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.

No account, and nothing to cancel.

What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.

I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.