Trailrace.co
Find your race Upcoming QualifiersFind a Qualifier
Search Dashboard Saved Races Calendar
Trailrace.co

Helping the trail running community discover, plan for, and thrive at the world's best trail races.

Find Races

  • Search all trail races
  • Explore collections
  • Race series
  • Race qualifiers
  • 200-mile races
  • Most climbing per mile
  • Trail running glossary

Races by Location

  • Colorado trail races
  • California trail races
  • Utah trail races
  • Arizona trail races
  • Washington trail races
  • All US trail races

Lottery Odds

  • Lottery calendar & calculators

Company

  • About
  • Get the app
  • Roadmap
  • Terms of service
  • Privacy policy

Feedback

  • Send Feedback
  • Feature Requests
  • Report a Bug

© 2026 Trailrace.co. All rights reserved.

Built on bad decisions in Boulder, CO.

Arizona Monster 300

Basic Listing
  1. Destination Trail
  2. 2027 Edition

A 300-mile non-stop crossing of the Sonoran Desert and its mountain ranges, from Patagonia to Superior

Explore the Course
Interactive map with aid stations, elevation & weather
DirectionsExplore
Registration OpensApril 10, 2026
DeadlineFebruary 26, 2027
Lottery DateApril 27, 2026
Register

Nearby races

Other trail races within 185 miles

Course map for Sinister Night Runs 54KM

Sinister Night Runs 54KM

50K
Queen Creek, AZ, US
Apr 24, 2027
34.32 miles
3,180 ft gain
Loop
Crew
Pacers
Dropbags
128 mi away
Course map for Javelina Jundred 100 Mile

Javelina Jundred 100 Mile

100 Mile
Fountain Hills, AZ, US
Oct 31, 2026
100 miles
6,300 ft gain
Multiple Loops
Crew
Pacers
Dropbags
157 mi away
Course map for Cocodona 250
Lottery

Cocodona 250

250 Mile
Black Canyon City, AZ, US
May 2, 2027
252.9 miles
38,940 ft gain
Point to Point
Crew
Pacers
Dropbags
185 mi away
All trail races in Arizona→
March 29, 2027
Monday 12:00pm MST start
Patagonia, AZ
United States
300.5 miles
Point to Point Course
32,390 ft
Elevation Gain
Lottery
Race selection via lottery
No Service Requirement
Does not require trail or volunteer work
No Qualifier
No qualifier race required
Extremely Challenging
Recommended for seasoned ultrarunners
Links
WebsiteInstagramFacebookYouTube
2025
Established
65%
Finish Rate

What Makes It Great

A non-stop, point-to-point run of 300.5 miles across southern Arizona from Patagonia to Superior. The route links remote desert backcountry with high mountain ranges, and runners have 150 hours to cover it, sleeping at aid-station tents along the way. Destination Trail, the team behind Tahoe, Bigfoot and Moab, runs it on National Forest lands.

Difficulty

Expert
9/10

Recommended for seasoned ultrarunners

Remote Terrain
Night Running
Sun Exposure
Technical Terrain

Race Highlights

300.5 miles, one way
A non-stop crossing of southern Arizona from Patagonia to Superior
The Mount Lemmon climb
The 19.8 miles from Charlou Gap to Mount Lemmon gain 6,175 feet
10°F to 100+°F
Hot desert days and freezing mountain nights fall in the same race
Five sleep stations
Tents with cots or pads, with a 6-hour limit per runner
Gaps over 20 miles
Three sections run more than 20 miles between aid stations, with few water sources

Finish Awards

Artist-made belt buckle
Awarded to finishers inside the 150-hour cutoff.
Finisher's print

Arizona Monster 300

Patagonia, AZ, United StatesMarch 29, 2027

March 29, 2027

Arizona Monster 300 is a point-to-point trail race in Patagonia, AZ, United States, held on March 29, 2027. The course covers 300.5 miles, climbs 32,390 ft, and has a 150h cutoff.

Course map for Arizona Monster 300
DistDistance300.5 mi
GainElevation Gain32,390 ft
LimitCutoff150 h
Remote TerrainNight RunningSun Exposure

Entry Timeline

Registration OpensApril 10, 2026
Lottery DrawApril 27, 2026
Registration DeadlineFebruary 26, 2027
Race DayMarch 29, 2027

Lottery

2027 entry was a lottery: registration ran April 10-26, 2026, and winners were announced April 27. Transfers from an earlier year bypass the lottery.

Qualifier

This event does not require a qualifier for entry.

Service Requirement

This race does not have a service requirement for entry.

Entry Demand Analysis

Terrain

Surface Types
Singletrack84%
Pavement14%
Forest Road2%
300.5 miles
Distance
Point to Point
Route
150h
Cutoff Time
3,573 ft
Average Elevation
32,390 ft
Total Ascent
33,840 ft
Total Descent
8,215 ft
High Point
1,637 ft
Low Point
Explore Course
Course map for Arizona Monster 300
Launch Course Explorer

Aid Stations & Cutoffs

LocationMileElevationCutoffCrewPacersDrop bags
Start
Start
0.04,049 ft—
Crew
Drop Bags
Casa Blanca
Aid Station
16.44,291 ft
7h30m7:30 PM
Apache Springs
Aid Station
36.85,259 ft
17h30m5:30 AM +1
Drop Bags
Oak Tree
Aid Station
52.55,135 ft
25h30m1:30 PM +1
Drop Bags
Santa Rita
Aid Station
70.23,990 ft
33h30m9:30 PM +1
Gabe Zimmerman
Aid Station
81.03,419 ft
38h30m2:30 AM +2
Crew
Drop Bags
Pistol Hill
Aid Station
91.33,540 ft
43h30m7:30 AM +2
Drop Bags
Valencia
Aid Station
104.42,966 ft
49h30m1:30 PM +2
Rillito
Aid Station
126.32,326 ft
59h11:00 PM +2
Crew
Pacers
Drop Bags
Catalina
Aid Station
144.52,700 ft
67h7:00 AM +3
Crew
Pacers
Drop Bags
Charlou Gap
Aid Station
151.43,189 ft
70h10:00 AM +3
Drop Bags
Mount Lemmon
Aid Station
171.27,726 ft
82h10:00 PM +3
Crew
Pacers
Drop Bags
Oracle
Aid Station
185.44,432 ft
89h5:00 AM +4
Tiger Mine
Aid Station
194.74,052 ft
93h30m9:30 AM +4
Drop Bags
Black Hills
Aid Station
208.83,501 ft
100h30m4:30 PM +4
Freeman
Aid Station
224.44,016 ft
108h30m12:30 AM +5
Crew
Pacers
Drop Bags
Tortilla
Aid Station
242.23,222 ft
116h30m8:30 AM +5
Grand Enchantment
Aid Station
256.91,791 ft
123h30m3:30 PM +5
Crew
Pacers
Drop Bags
Gila River
Aid Station
273.21,640 ft
132h12:00 AM +6
Crew
Pacers
Drop Bags
Picket Post
Aid Station
294.92,418 ft
147h3:00 PM +6
Finish
Finish
300.52,654 ft
150h6:00 PM +6
Crew
Pacers
Drop Bags

Cutoffs and access rules come from the race’s published information and can change. Check the official race site before planning around them.

Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.

No on-site camping available

The manual lists no organized camping. Crew may not camp at aid stations, in any vehicle type. Runners get cots or pads at sleep stations, with a 6-hour limit; these are for registered runners only.

Crew Access Points

Pacer Rules

  • Pacing begins at the Rillito aid station (mile 126.3); pacers may join only at crew access aid stations.
  • Pacers may not carry a runner's gear, food or water.

Crew Rules

  • Crew may meet runners only at crew access aid stations, with one vehicle per runner.
  • No crew contact between aid stations, and none after a station's cutoff.
Weather

Late March and early April bring large temperature swings. The manual gives a range from about 10°F at night in the mountains to over 100°F by day in the desert, and says it has dropped as low as 7°F. Weather fronts can build quickly, and water sources between aid stations are few.

Cold/Hypothermia Risk

The manual warns of extremely cold nights, and mandatory gear reflects it.

Gear Rules

Trekking poles allowed

Required Gear

  • Waterproof jacket with a hood
  • Gloves
  • Hat or buff
  • Pants or tights (Must cover the entire legs)
  • Long-sleeve insulating layer
  • SPOT tracker (Provided to runners; pacers do not carry one)
  • Device with the course GPX track
  • Cell phone
  • Emergency bivy (Provided to runners; pacers supply their own)
  • Headlamp or waist light
  • Extra batteries
  • Whistle
  • 500 extra calories (For emergency use only)

Recommended Gear

  • Gaiters
  • Sun hat
  • Puffy jacket with a hood
  • Neck gaiter
  • Extra headlamp
  • Battery pack
  • Toilet paper, wipes and zip locks
  • Capacity to carry 3 liters
  • Water filter
  • Extra calories
  • Personal ID and emergency contacts
  • Card with allergies and medical conditions
  • First aid kit
  • Personal medications
  • Sunscreen

Featured Videos

Video thumbnail: Broken at 300: Facing the Arizona Monster 300 | Ultrarunning Documentary
Broken at 300: Facing the Arizona Monster 300 | Ultrarunning Documentary
Everyday Ultra•2025
Video thumbnail: Running the 2025 Arizona Monster 300
Running the 2025 Arizona Monster 300
Mark Bonikowsky•2025
Video thumbnail: Inaugural Arizona Monster 300
Inaugural Arizona Monster 300
Wes Plate•2025

Race Reports

Arizona Monster 300 – 2025 Race Report
By Ed Shelton • 2025
Arizona Monster 300 (Race Recap)
By Because Being Ordinary Is Boring • 2025

Reviews

to write a review.

No reviews yet.

Register•March 29, 2027