TRAILGOAT
Mogollon Monster 100 — 2025Trail race course98.7mi28,726ftSep 6

Mogollon Monster 100 — 2025

Race day · Sep 6, 2025 · by Aravaipa Running

Race almanac: 1 year of race-day weather
Plan this race
Course map, elevation profile & surface
Distance
98.7mi
Elev gain
28,726ft
Elev loss
28,726ft
High point
13,960ft
Low point
7,759ft
Effective oxygen
59–75%of sea level
Drawing the course…

Race-day light

In the dark
41%
Sunrise
6:46am
Sunset
7:34pm
Headlamp from
50mi

For a 25:15 finish (an estimate) · starting 7:00 AM Sep 6 · headlamp mi 50–90. Dark means the sun below civil twilight.

Climbs

11 climbs · 28,343 ft totalbiggest first
Pick a climb to find it on the profile and the map.

Elevation gain, measured two ways

SourceGainvs lidar
Course file (GPX)28,726ft-11%
USGS lidar, 1 m32,296ftreference

They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 24, 2026. The planner still uses the course file.

Aid stations as published on the course file
Aid stationMilekm
A Burrows Aid Station65.7105.7
A Pole Creek Aid station78.7126.6
A Maggie Aid Station84.1135.3

Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.

Race director? Check this course and correct anything that’s off, and it carries a ✓ verified by the race badge everywhere it appears, including the free map embed for your own site. Claim your course.

Nobody from Mogollon Monster 100 — 2025 has checked this course yet — it’s built from what the race published. Ask them to:Email your race director

Ran this course and something’s off — an aid station moved, a reroute, a wrong number? Report it and we’ll chase it down; fixes land for every runner (and count toward the race’s verified badge).

Conditions typical race-day weather for Sep 6 at the start
Typical high
67°F
Typical low
40°F
Chance of rain
46%
2025 high
60°F

Typical = the median of 2016–2025 for Sep 6 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.

Race almanac 1 year of this race

Past editions

On race day it reached 60°F at the start, with a low of 36°.

YearStart °FHigh point °FRainWind
2025 Sep 660°/36°43°/26°0.27in6mph

race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (13,960 ft).

Reviews what runners who have been there say

No reviews yet — be the first to run it and tell other runners what to expect.

About this course

Mogollon Monster 100 — 2025 covers 98.7 mi (158.9 km) with 28,726 ft of elevation gain. That is about 291 ft per mile of climbing, and 28,726 ft of descent. The course tops out at 13,960 ft and bottoms out at 7,759 ft. There are 3 aid stations on course; the longest stretch between aid is 65.7 mi. The profile has 11 sustained climbs; the biggest is the climb from mi 43.3, +5,082 ft over 8.7 mi at 11.0% on average (steepest stretch 23%). Race day is September 6, 2025, starting at 7:00 AM; the sun rises at 6:46 AM and sets at 7:34 PM. Typical race-day weather at the start: a high of 67°F and a low of 40°F, with a 46% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.

Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.

Race director? — one line of HTML, always up to date.

Course history

  1. Oct 13, 2026Added to the catalog
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