Is crew access allowed on the 100 Miler course?

Yes, crew access is allowed on the 100 Miler course. Crew access is permitted for 5, 7, 8, 9, 11, 12, and 14. No crew access is permitted at 1, 2, 3, 4, 6, 10 and 13. East Silver Island Loop Road is OFF LIMITS to all runner crew vehicles.

Are drop bags allowed on the 100 Miler course?

Yes, drop bags are allowed on the 100 Miler course. Drop bags will be available at Aid Stations 3, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14. Place them by their aid station bins no later than half an hour before the start.

Are pacers allowed on the 100 Miler course?

Yes, pacers are allowed on the 100 Miler course. Pacers are welcome to join you starting at Aid Station 5/7 and continue with you for the remainder of the race. Swap pacers only at aid stations which have crew access (5/7, 8, 9, 11, 12 and 14).

What is the cutoff time for the 100 Miler course?

The overall time limit for the 100 Miler course is 36 hours from the start.

Ultras · US · UT

Salt Flats Endurance Runs

100 Miler · 100 Mile

Registration open

Registration is open.

Race dateApril 30 to May 1, 2027

Duration2 days

Start7:00am

Whenin 188 days

Who's going to Salt Flats Endurance Runs?

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 Entry 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 From the name

100 Mile The race calls this course “100 Miler” and hasn't published a measured distance. Trail courses often run long.

Climb

not checked yet

Descent

not checked yet

High point

not checked yet

Time limit The race

36:00:00

Aid stations

Started

not checked yet

Finished

not checked yet

Finish rate

not checked yet

The course

Where it goes · 16 aid stations

No official GPX on file yet. These are the aid station coordinates, not the trail. Have the GPX? Send us the link.

Starts at 7:00 AM Friday on the Bonneville Speedway and runs out to join the roads and trails that traverse the islands, mountains that seem to float on the Salt Flats. Starts and finishes at the same place.

The race

What this one is

An ultra on the Bonneville Salt Flats near Wendover, Utah. A Friday morning start at the Bonneville Speedway, with 100 mile, 100K, 50 mile and 50K distances, plus 5K and 10K fun runs on Saturday. Courses run on the salt, dirt roads and ATV trails, with a salt-adjacent alternate course ready when the salt is wet.

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 saltflatsenduranceruns.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 Salt Flats Endurance Runs Thirty six hours, and nine stations with a clock on each.

You are running it

You reach Aid Station 8 (Ghost Dog), mile 57.4, before its 3:00am cutoff, and you already knew that this morning.

An arrival time for all 16 stations, worked out from your own training.

Start free →

You are pacing

You are at Aid Station 5 (Hastings Junction), mile 31.6, warm and fed, and you know you have 68 miles ahead of you.

The same sheet says when they reach you.

You are deciding

You find out Salt Flats Endurance Runs is months of work away, not years, and you enter.

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: Yes saltflatsenduranceruns.com

Vehicles per runner: not checked yet

Pacers: Yes saltflatsenduranceruns.com

Muling: not checked yet

Drop bags: Yes saltflatsenduranceruns.com

Cupless: Yes saltflatsenduranceruns.com

Course marking: not checked yet

Night running: Yes saltflatsenduranceruns.com

Dogs: Allowed saltflatsenduranceruns.com

Headphones: not checked yet

Crew rules: Crew access is permitted for 5, 7, 8, 9, 11, 12, and 14. No crew access is permitted at 1, 2, 3, 4, 6, 10 and 13. East Silver Island Loop Road is OFF LIMITS to all runner crew vehicles. saltflatsenduranceruns.com

Pacer rules: Pacers are welcome to join you starting at Aid Station 5/7 and continue with you for the remainder of the race. Swap pacers only at aid stations which have crew access (5/7, 8, 9, 11, 12 and 14). saltflatsenduranceruns.com

Drop bag rules: Drop bags will be available at Aid Stations 3, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14. Place them by their aid station bins no later than half an hour before the start. saltflatsenduranceruns.com

Cutoff philosophy: not checked yet

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
10.00	Aid Station 1 (Speedway/Salt Flats) NoneSignal wrong?	?	○	○	?	?	5.50
15.50	Aid Station 2 (NO Post) NoneSignal wrong?	?	○	○	?	?	7.10
22.60	Aid Station 3 (Cobb Peak Road) NoneSignal wrong?	?	○	●	?	?	2.90
25.50	Aid Station 4 (Cobb Peak Pass) NoneSignal wrong?	?	○	○	?	?	6.10
31.60	Aid Station 5 (Hastings Junction) NoneSignal wrong?	6:00pm	●	●	●	?	7.90
39.50	Aid Station 6 (Sheep Camp) NoneSignal wrong?	8:30pm	○	●	?	?	7.40
46.90	Unmanned water stop NoneSignal wrong?	?	?	?	?	?	3.50
50.40	Aid Station 7 (Hastings Junction) NoneSignal wrong?	?	●	●	?	?	7.00
57.40	Aid Station 8 (Ghost Dog) NoneSignal wrong?	3:00am	●	●	●	?	4.30
61.70	Aid Station 9 (Silver Island Pass) NoneSignal wrong?	4:30am	●	●	●	?	5.30
67.00	Aid Station 10 (Jeep Trail) NoneSignal wrong?	6:30am	○	●	?	?	7.30
74.30	Aid Station 11 (Rock Pile) NoneSignal wrong?	9:00am	●	●	●	?	8.40
82.70	Aid Station 12 (Nevada) NoneSignal wrong?	12:00pm	●	●	●	?	3.30
86.00	Unmanned water stop NoneSignal wrong?	?	?	?	?	?	3.80
89.80	Aid Station 13 (Utah) NoneSignal wrong?	2:15pm	○	●	?	?	6.50
96.30	Aid Station 14 (Home Stretch) NoneSignal wrong?	4:45pm	●	●	●	?	?

Same race, other lines

Other distances and other years

Other distances: 50 Miler (50 Mile)
100K (106.5K)
10K
50K
5K

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.

2 people have been out there with a camera or a microphone.

Social account

saltflatsenduranceruns

Social account

Salt Flats Endurance Runs

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: 156 sources for this race. Hover a source link to read the sentence it came from.

25% 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
Were you out there? Say which stops a text got out from
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.