Is crew access allowed on the 100 Miler course?

Yes, crew access is allowed on the 100 Miler course. Crew are allowed only at crew access aid stations (Freeman, Grand Enchantment, Gila River and the finish). Only one crew vehicle per runner, parked legally, with the crew parking pass displayed in the front window; passes are issued at runner check-in to runners whose crew completed the crew form. No vehicle over 20 ft long or 8.5 ft wide, no RVs that exceed that, no trailers. Time your arrival with live tracking, no more than a half hour before your runner. No crew camping at aid stations, and crew must leave when the runner leaves. Crew contact between aid stations, or after a station's cut off, disqualifies the runner. Neither crew nor pacer is needed to finish.

Are drop bags allowed on the 100 Miler course?

Yes, drop bags are allowed on the 100 Miler course. Drop bags are optional and can be used at some locations and not others. Maximum size 16 inches by 24 inches by 10 inches; re-closeable and sturdy; no coolers. Label with full name, bib number and aid station name(s). Drop bags are not mailed after the event; those not collected at the aid stations are donated or disposed of.

Are pacers allowed on the 100 Miler course?

Yes, pacers are allowed on the 100 Miler course. A pacer may join starting at mile 62.2. Pacing begins at the Grand Enchantment aid station and runs to the finish. Pacers join and leave only at crew access aid stations and must be on foot. Only one pacer at a time. Pacers must carry the mandatory gear (a pacer supplies their own bivy and wag bag), wear a pacer bib, and may not carry the runner's gear, food or water.

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. This is a non stop event. When the run starts the clock does not stop until 36 hours later. Runners must leave each aid station before the designated cut off to continue.

Ultras · US · AZ

El Jefe 100

Registration open

Registration closes Monday, March 22 at 11:59 PM MT.

Race dateApril 3-4, 2027

Duration2 days

Start6:00am

Whenin 161 days

First held2027

Who's going to El Jefe 100?

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

105.8 miles

Climb The race

12,548 ft

Descent The race

13,910 ft

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 point to point · 8 aid stations

Course line from the race's own GPX. Source file. Year of this file not known.

A 105.8-mile point-to-point from the Tiger Mine Trailhead near Oracle to Superior, almost entirely on remote singletrack through classic Sonoran Desert terrain, on National Forest lands. Non-stop with a 36 hour limit.

Temperatures can vary from 10F at night in the mountains to 100+F in the desert during the day. There are very few streams or other water sources between the aid stations. In one segment, runners must go over 20 miles between full aid stations while carrying required and recommended gear and water. Much of the terrain is rugged and remote, with very exposed sections, dangerous cliffs, potential for rock fall, snakes, spiders, scorpions and wildlife.

The race

What this one is

El Jefe 100 is a 105.8-mile point-to-point run on remote singletrack through classic Sonoran Desert terrain in southern Arizona, all on National Forest lands. It starts at the Tiger Mine Trailhead near Oracle and ends in Superior. Runners have 36 hours and 6 aid stations. It takes place the same week as the Arizona Monster 300, on a portion of the same course.

Destination Trail announced El Jefe 100 on May 5, 2026 as its newest desert race, with a first edition in April 2027. It was built for runners eyeing the 200 and 300 mile distances who thought: not yet.

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: 18 docs.google.com

Transfers: not checked yet

Deferrals: not checked yet

Running, crewing, pacing or still deciding

How NavRun helps with El Jefe 100 Thirty six hours, and six stations with a clock on each.

You are running it

You reach Grand Enchantment, mile 62.2, before its 1:30am cutoff, and you already knew that this morning.

An arrival time for all 6 stations, each next to its cutoff, worked out from your own training.

Start free →

You are pacing

You are at Grand Enchantment, mile 62.2, warm and fed, and you know you have 44 miles ahead of you.

The same sheet says when they reach you.

You are deciding

You find out El Jefe 100 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 docs.google.com

Vehicles per runner: 1 docs.google.com

Pacers: Yes, from mile 62.20 docs.google.com

Muling: Not allowed docs.google.com

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: Crew are allowed only at crew access aid stations (Freeman, Grand Enchantment, Gila River and the finish). Only one crew vehicle per runner, parked legally, with the crew parking pass displayed in the front window; passes are issued at runner check-in to runners whose crew completed the crew form. No vehicle over 20 ft long or 8.5 ft wide, no RVs that exceed that, no trailers. Time your arrival with live tracking, no more than a half hour before your runner. No crew camping at aid stations, and crew must leave when the runner leaves. Crew contact between aid stations, or after a station's cut off, disqualifies the runner. Neither crew nor pacer is needed to finish. docs.google.com

Pacer rules: Pacing begins at the Grand Enchantment aid station and runs to the finish. Pacers join and leave only at crew access aid stations and must be on foot. Only one pacer at a time. Pacers must carry the mandatory gear (a pacer supplies their own bivy and wag bag), wear a pacer bib, and may not carry the runner's gear, food or water. docs.google.com

Drop bag rules: Drop bags are optional and can be used at some locations and not others. Maximum size 16 inches by 24 inches by 10 inches; re-closeable and sturdy; no coolers. Label with full name, bib number and aid station name(s). Drop bags are not mailed after the event; those not collected at the aid stations are donated or disposed of. docs.google.com

Cutoff philosophy: This is a non stop event. When the run starts the clock does not stop until 36 hours later. Runners must leave each aid station before the designated cut off to continue. 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
0.00	Start NoneSignal wrong?	?	○	●	○	?	14.10
14.10	Black Hills NoneSignal wrong?	10:15am	○	○	○	●	15.60
29.70	Freeman NoneSignal wrong?	3:30pm	●	●	○	●	17.80
47.50	Tortilla NoneSignal wrong?	8:45pm	○	○	○	?	14.70
62.20	Grand Enchantment NoneSignal wrong?	1:30am	●	●	●	●	16.30
78.50	Gila River NoneSignal wrong?	6:45am	●	●	●	●	21.70
100.20	Picket Post NoneSignal wrong?	4:00pm	○	○	○	●	5.60
105.80	Finish NoneSignal wrong?	6:00pm	●	●	●	?	?

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.

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

Social account

Destination Trail Instagram

Social account

Destination Trail Facebook

Social account

Official channel

Destination Trail YouTube

Official channel

All (3) Official channel (1) Social account (2)

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

51% 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.