Is crew access allowed on the 300 Miler course?

Yes, crew access is allowed on the 300 Miler course. Crew contact with runners is permitted only at crew access aid stations. One crew vehicle per runner, displaying the Arizona Monster 300 Crew Vehicle Access Pass issued at check-in. No RVs or trailers; vehicles must fit one standard parking space (no longer than 20 feet or wider than 8.5 feet). No crew camping at aid stations. Time your arrival with live tracking, no more than half an hour before your runner, and leave when your runner leaves. Crew contact with a runner after the station cut off earns the runner a DNF.

Are drop bags allowed on the 300 Miler course?

Yes, drop bags are allowed on the 300 Miler course. Drop bags are optional and may be used at some locations and not others. Maximum size 16 inches by 24 inches by 10 inches. No coolers; securely closed plastic bins are allowed. Label each bag with the runner's full name, bib number and aid station name. Bags are not mailed after the event.

Are pacers allowed on the 300 Miler course?

Yes, pacers are allowed on the 300 Miler course. A pacer may join starting at mile 126.3. Pacing is allowed from Rillito to the finish. Pacers join and leave only at crew access aid stations marked for pacer pick-up and drop-off. A runner may not have more than one pacer at a time. Pacers must be on foot, wear a pacer bib, carry the mandatory gear (the tracker is not required) and follow the same rules as runners. Pacers may not carry a runner's gear, food or water.

What is the cutoff time for the 300 Miler course?

The overall time limit for the 300 Miler course is 150 hours from the start. This is a non stop event. When the run starts the clock does not stop until 150 hours later. Runners must leave each aid station before the designated cut off to continue.

Ultras · US · AZ

Arizona Monster 300

Registration open

Registration is open.

Race dateMarch 29 to April 4, 2027

Duration7 days

Start12:00pm

Whenin 156 days

Who's going to Arizona Monster 300?

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 Results 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 The race

300.5 miles

Climb

32,386 ft

Descent

33,840 ft

High point

not checked yet

Time limit The race

150:00:00

Aid stations

Started

not checked yet

Finished

not checked yet

Finish rate

not checked yet

The course

Where it goes point to point · 21 aid stations

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

A non-stop 300.5 mile point to point journey from Patagonia to Superior through Southern Arizona's Sonoran desert. The clock runs for 150 hours from the start and does not stop. The route crosses rugged, remote backcountry and high mountains.

Terrain as listed at registration: 259.1 miles (84%) single-track, 34 miles (10%) bike path, 9.5 miles (3%) paved road and 6 miles (2%) dirt road. In a few segments runners go over 20 miles between full aid stations while carrying required gear and water, and there are very few streams between aid stations. Temperatures can vary from 10F to 100+F.

The race

What this one is

The Arizona Monster is a 300.5-mile point-to-point journey through Southern Arizona's Sonoran desert, from Patagonia to Superior. It is a non-stop endurance run on a 150 hour clock, across rugged backcountry and high mountains, with 19 aid stations, hot food, medical staff and HAM radio communications. It is organized by the Destination Trail team, who also run the Tahoe 200, Bigfoot 200 and Moab 240.

Getting in

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

Lottery: Yes ultrasignup.com

Lottery opens: April 10, 2026 ultrasignup.com

Lottery draw: April 27, 2026 ultrasignup.com

Field cap: not checked yet

Registration: UltraSignup destinationtrailrun.com

Qualifying: not checked yet

Minimum age: 18 docs.google.com

Transfers: Yes docs.google.com

Deferrals: not checked yet

Running, crewing, pacing or still deciding

How NavRun helps with Arizona Monster 300 Nineteen stations with a clock on each.

You are running it

You reach Catalina, mile 144.5, before its 7:00am cutoff, and you already knew that this morning.

An arrival time for all 19 stations, each next to its cutoff, worked out from your own training.

Start free →

You are pacing

You are at Rillito, mile 126.3, warm and fed, and you know you have 174 miles ahead of you.

The same sheet says when they reach you.

You are deciding

You find out Arizona Monster 300 is months of work away, not years, and you put your name in the lottery.

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 126.30 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: Yes docs.google.com

Dogs: not checked yet

Headphones: not checked yet

Crew rules: Crew contact with runners is permitted only at crew access aid stations. One crew vehicle per runner, displaying the Arizona Monster 300 Crew Vehicle Access Pass issued at check-in. No RVs or trailers; vehicles must fit one standard parking space (no longer than 20 feet or wider than 8.5 feet). No crew camping at aid stations. Time your arrival with live tracking, no more than half an hour before your runner, and leave when your runner leaves. Crew contact with a runner after the station cut off earns the runner a DNF. docs.google.com

Pacer rules: Pacing is allowed from Rillito to the finish. Pacers join and leave only at crew access aid stations marked for pacer pick-up and drop-off. A runner may not have more than one pacer at a time. Pacers must be on foot, wear a pacer bib, carry the mandatory gear (the tracker is not required) and follow the same rules as runners. Pacers may not carry a runner's gear, food or water. docs.google.com

Drop bag rules: Drop bags are optional and may be used at some locations and not others. Maximum size 16 inches by 24 inches by 10 inches. No coolers; securely closed plastic bins are allowed. Label each bag with the runner's full name, bib number and aid station name. Bags are not mailed after the event. docs.google.com

Cutoff philosophy: This is a non stop event. When the run starts the clock does not stop until 150 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?	?	●	●	○	?	16.40
16.40	Casa Blanca NoneSignal wrong?	7:30pm	○	○	○	●	20.40
36.80	Apache Springs NoneSignal wrong?	5:30am	○	●	○	●	15.70
52.50	Oak Tree NoneSignal wrong?	1:30pm	○	●	○	●	17.70
70.20	Santa Rita NoneSignal wrong?	9:30pm	○	○	○	?	10.80
81.00	Gabe Zimmerman NoneSignal wrong?	2:30am	●	●	○	●	10.30
91.30	Pistol Hill NoneSignal wrong?	7:30am	○	●	○	?	13.10
104.40	Valencia NoneSignal wrong?	1:30pm	○	○	○	●	21.90
126.30	Rillito NoneSignal wrong?	11:00pm	●	●	●	●	18.20
144.50	Catalina NoneSignal wrong?	7:00am	●	●	●	●	6.90
151.40	Charlou Gap NoneSignal wrong?	10:00am	○	●	○	?	19.80
171.20	Mount Lemmon NoneSignal wrong?	10:00pm	●	●	●	●	14.20
185.40	Oracle NoneSignal wrong?	5:00am	○	○	○	●	9.30
194.70	Tiger Mine NoneSignal wrong?	9:30am	○	●	○	●	14.10
208.80	Black Hills NoneSignal wrong?	4:30pm	○	○	○	●	15.60
224.40	Freeman NoneSignal wrong?	12:30am	●	●	●	●	17.80
242.20	Tortilla NoneSignal wrong?	8:30am	○	○	○	?	14.70
256.90	Grand Enchantment NoneSignal wrong?	3:30pm	●	●	●	●	16.30
273.20	Gila River NoneSignal wrong?	12:00am	●	●	●	●	21.70
294.90	Picket Post NoneSignal wrong?	3:00pm	○	○	○	●	5.60
300.50	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.

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

The Monster is Coming: 300 mile footrace through Arizona

Promo

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

52% 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.