Gaspin Through The Aspens
50 K · 50K
On the calendar
The date is set. Entry has not opened. Registration opens January 1, 2027.
Race dateSeptember 18, 2027
Start7:00am
Whenin 337 days
First held2025
Who's going to Gaspin Through The Aspens?
Free. You can start with nothing.
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
50K
Climb
5,900 ft
Descent
not checked yet
High point
not checked yet
Time limit
not checked yet
Aid stations
6
Started
not checked yet
Finished
not checked yet
Finish rate
not checked yet
The course
Where it goes
loop · 6 aid stations
From the start the course climbs toward the summit pass, makes a loop along the ridgeline, then comes back down the mountain to the start. Mill Canyon is remote with limited vehicle access.
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
Five stations with a clock on each.
You are running it
You reach Mill Canyon, mile 11.4, before its 11:30am cutoff, and you already knew that this morning.
An arrival time for all 5 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
-
not checked yet
- Cupless
-
not checked yet
- Course marking
-
Fully Marked
docs.google.com
- Night running
-
not checked yet
- Dogs
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not checked yet
- Headphones
-
not checked yet
- Crew rules
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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
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Pacers are not permitted on any course distance.
docs.google.com
- Drop bag rules
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No drop bags on the course. Every distance may leave one bag at the start/finish for warm clothes; it stays at the start/finish line.
docs.google.com
- Cutoff philosophy
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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
|
9:00am |
○ |
○ |
? |
? |
5.30 |
| 11.40 |
Mill Canyon
|
11:30am |
○ |
○ |
? |
? |
5.80 |
| 17.20 |
Mill Canyon
|
2:00pm |
○ |
○ |
? |
? |
4.80 |
| 22.00 |
Elk Camp
|
3:30pm |
○ |
○ |
? |
? |
3.50 |
| 25.50 |
Salamander Flats
|
5:00pm |
○ |
○ |
? |
? |
6.00 |
| 31.50 |
Finish Line
|
7:00pm |
? |
? |
? |
? |
? |
Same race, other lines
Other distances and other years
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.
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.
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.
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.
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: 70 sources for this race. Hover a source link to read the sentence it came from.
27% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.
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.
