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Dead Horse Ultra Course Guide

The Dead Horse Ultra is a high-desert trail race on Moab’s Magnificent 7 trails, the slickrock and sandy singletrack off Gemini Bridges that rolls along the mesa above the Moab Valley with Arches and the La Sals out across the canyon. It is one of the biggest fall trail events in the country, it sells out every year, and the cool November weather is a big part of why. I will walk you through the course first, then give you a pacing and fueling plan that fits the rolling slickrock and the sand. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Dead Horse Ultra quick facts

Date
Saturday, November 14, 2026
Location
Magnificent 7 / Gemini Bridges trails, off Hwy 313 northwest of Moab, UT
Distances
50 Mile · 50K · 30K · 15K
Elevation gain
50M: about 4,895 ft · 50K: about 2,805 ft · 30K: about 1,729 ft · 15K: about 932 ft
Start
50M 6:00 AM · 50K 7:30 AM (waves) · 30K 9:00 AM · 15K 9:30 AM
Cutoff
50M: 12 hr 45 min (about 6:45 PM) · 50K: 10 hr, with intermittent aid cutoffs
Aid stations
50M passes about 9 aid stations; refill bottles, bladders, and reusable cups at each
Qualifier
No Western States, Hardrock, or UTMB Running Stones status listed by the race

These facts come from the official race site and UltraSignup. Check the current date, cutoffs, and aid stations in the race guide before you commit. Race logistics change year to year.

The course: where Dead Horse is won and lost

All four distances run the same Magnificent 7 trail system off Gemini Bridges, just with longer loops as you go up in distance. There is no single mountain to climb here. The day is a long string of rolling slickrock, rocky singletrack, and sandy washes up on the mesa, and the race gets decided by how well you handle the footing and how evenly you pace the constant ups and downs.

The opening climb up Gemini Bridges

The early miles grunt up the Gemini Bridges trail toward the first aid station, and this is the most obvious climb of the day. It is not brutal, but it is a real pull on rock, and the temptation is to hammer it because the legs feel fresh and the morning is cold. Do not. This is rolling-course math, not one-big-climb math, so spend the climb settling into a steady effort and let the field sort itself out around you.

Once you top out it opens onto the mesa, and you start getting the views the race is known for: Court Point, Bride Canyon, and out toward Arches with the La Sals on the horizon. Soak it in, but keep your feet honest, because the rock never really lets up.

The rolling mesa: slickrock, singletrack, and sand

The middle of the course is the heart of it. You roll along the Bull Run trail and the wider Magnificent 7 network, trading slickrock for desert singletrack and back again, with the Moab Valley dropping away below you. The slickrock actually grips well and is more fun than scary, but it is rocky and uneven, so your feet and ankles take a steady beating over the miles.

The quiet villain out here is the sand. The washes and softer stretches sap your legs more than the rock does, and on the longer distances they show up exactly when you are getting tired. Keep your stride short and patient through the sand instead of fighting it, and you will save a surprising amount.

The closing miles: don’t let the sand bury you

On the 50 mile especially, the back third is where good days and bad days separate. By then your quads are rattled from the rock, your feet are tired of the uneven slickrock, and every sandy section feels twice as long. People who paced the early climb and the mesa evenly come home strong; people who pushed the fun runnable bits early end up walking the late sand.

Practice running on tired legs over mixed footing before race day, and rehearse staying smooth when the trail turns soft. Being able to keep your legs turning over through the late washes, when everything wants to walk, is honestly what sets people apart here.

Pacing strategy for a rolling slickrock ultra

Dead Horse is a rolling course, not a climb-and-descend one, so the game is even effort across hundreds of little ups and downs plus the soft sand, not hitting a flat pace chart. Run by feel and let the terrain set your speed.

Run effort, not pace, and respect the sand

Your flat-ground splits will lie to you here. The rock slows you down even when it does not look steep, and the sand slows you down a lot, so chasing a number on the watch is a fast way to blow up. Hold a steady, conversational effort through the rolling sections and accept that your moving pace will bounce around with the footing. Use a grade-adjusted pace to turn your real fitness into honest targets for the climbs and the runnable mesa, and you will not torch your legs on the early Gemini Bridges pull.

Build a finish prediction that fits the terrain

Do not guess your Dead Horse finish off a road time. The slickrock footing, the sandy washes, and the rolling gain all add real minutes that a flat predictor ignores. A terrain-aware finish prediction gives you a realistic window for your distance and lets you work back into the intermittent aid-station cutoffs, so you actually know how much buffer you carry into each checkpoint instead of finding out the hard way.

⏵ Free tools to pace this course

Fueling strategy for a long dry desert day

The 50 mile keeps most runners out there for the better part of a day, and even the 50K is a multi-hour effort. The cool weather helps, but the dry desert air and the steady work still make carbohydrate, sodium, and fluid as important as fitness.

Carbs: steady, trained, and easy to take

For an effort this long, aim for around 60 to 90 grams of carbohydrate per hour, pushing the higher end only if your gut is trained for it. The aid stations come often enough that you are never far from a refill, but you still want a steady drip of calories between them rather than big gaps and big catch-up doses. Rehearse your exact race-day carb rate on long runs over rough footing so taking in food while you pick your way through rock and sand feels normal, not like a chore.

Sodium and fluid: the desert is drier than it feels

Cool November temps mean you will not be drenched in sweat, so it is easy to under-drink and under-salt, which is exactly the trap here. The high-desert air is bone dry and you lose more fluid than you notice, so keep sipping and keep your sodium honest, often somewhere around 400 to 700 milligrams per liter of fluid, more if you run salty. You can refill bottles, bladders, and reusable cups at every aid station, so use them. Weigh yourself before and after a long run to find your real sweat rate, then build the plan around your own number instead of a guess.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and your distance with the free ultra fueling calculator. Browse the rest of the free running tools at the tools hub.

⏵ Train for it with Summit Line

Get a race-day plan built around YOUR fitness, this exact Dead Horse course profile, and your projected splits. Summit Line reads your real training, builds a plan for the rolling slickrock and the sand, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Dead Horse Ultra FAQ

How hard is the Dead Horse Ultra?

It is a real desert trail ultra, not a fast road course, but most people find it more runnable than the slickrock makes it sound. The 50 mile climbs about 4,895 feet over the Magnificent 7 trail system on technical slickrock, sandy washes, and rocky singletrack, while the 50K runs around 2,805 feet of gain on the same kind of terrain. There is no single monster climb; the difficulty comes from the constant rolling, the rocky footing, and the sneaky sand that eats your legs late. November in Moab is cool and dry, so the weather works in your favor and the cutoffs (12 hr 45 min for the 50M, 10 hr for the 50K) give a prepared runner real room to finish.

How much climbing is in the Dead Horse Ultra?

It depends on your distance. The 50 mile has roughly 4,895 feet of total gain and the 50K about 2,805 feet, with the 30K near 1,729 feet and the 15K around 932 feet, per the official course numbers. None of it is one big sustained climb; it is rolling slickrock and desert singletrack with a lot of small ups and downs that add up over the day. The early grunt up the Gemini Bridges trail to the first aid is the most obvious climb, then it rolls out onto the Bull Run trail and the mesa above the Moab Valley.

What is the terrain and footing like at Dead Horse Ultra?

You are running the Magnificent 7 trails off Gemini Bridges, so expect slickrock, rocky climbs, sandy washes, and rolling high-desert singletrack. The slickrock has great traction and is not as scary as it sounds, but it is rocky and uneven, so your feet take a beating and you want a shoe with some protection. The sand sections are the quiet killer late in the race; they sap your legs more than the rock does. The payoff is the views: Arches National Park, the La Sal Mountains, and the Moab Valley dropping away below you.

What are the cutoff times for the Dead Horse Ultra?

The 50 mile has an overall limit of about 12 hours 45 minutes, so starting at 6:00 AM you have until roughly 6:45 PM, and the 50K gets about 10 hours. There are intermittent cutoffs at aid stations along the way, so you cannot save all your buffer for the finish. Reviewers consistently call the cutoffs tight on paper but fair in practice given how runnable the course is. Confirm the exact aid-station cutoffs in the current race guide before you start, since they can shift year to year.

What is the weather like at the Dead Horse Ultra?

Mid-November in Moab is close to ideal for running. Days are usually cool and dry with strong high-desert sun, and nights get cold, so the morning start can be near freezing while the afternoon warms into comfortable shirt-sleeve running. The big thing to plan for is the temperature swing: dress so you can shed layers as the day heats up, and do not underestimate how dry the desert air is even when it does not feel hot. It is one of the few fall ultras where heat is rarely the problem, which is a big part of why it sells out.

Is the Dead Horse Ultra a good first 50 mile or 50K?

It is one of the friendlier big trail races to pick for a first ultra at either distance. The terrain is technical but runnable, the cool November weather takes heat off the table, the aid stations are frequent and well stocked, and the cutoffs are generous for a prepared runner. You still need to train for the rocky footing, the rolling climbs, and the soft sand, and you need a fueling plan you have rehearsed. Do that and the course rewards steady, patient running rather than punishing you.

This guide is independent and for planning only. The course details, dates, cutoffs, and aid stations come from public sources and can change year to year, so confirm the current specifics with the official race before you register or run. The fueling and pacing advice is general and not medical advice.