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⏵ Course guide · New Mexico ultra

Deadman Peaks Trail Run Course Guide

The Deadman Peaks Trail Run is a high-desert ultra on the Continental Divide Trail near Cuba, New Mexico, and it has earned the word deceptively hard. The profile looks gentle, but the course just rolls and rolls through badlands and slickrock with almost no shade, and it goes from a freezing start to full midday exposure. I will walk you through the course first, from the short 30K up to the Backbone 100, then give you a pacing and fueling plan that fits the rolling terrain, the remoteness, and the cold. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Deadman Peaks quick facts

Date
Saturday, November 7, 2026
Location
Continental Divide Trail, Rio Puerco Valley, near Cuba, New Mexico
Distances
Backbone 100 (about 106 mi), 53 miler, 55K, 30K, and a short 8 to 10 mi option, plus relays
Elevation gain
100: about 12,600 ft · 53 mi: about 7,560 ft · 55K: about 4,900 ft, all rolling between 6,350 and 7,400 ft
Start times
100 at 6:00 AM · 53 mi at 7:00 AM · 55K at 8:00 AM · 30K at 9:00 AM · short course at 10:00 AM
Cutoff
100: about 35 hr (finish ~5:00 PM Sunday) · 53 mi: ~17 hr (midnight) · 55K: ~14 hr, with intermediate aid cutoffs
Qualifier
No Western States, Hardrock, or UTMB qualifier status listed by the race

These facts come from the official race site and UltraSignup. The distance lineup, cutoffs, and aid have changed as the event has grown, so check the current race-day details before you commit. Race logistics change year to year.

The course: where Deadman Peaks is won and lost

The longer races run an out and back on the CDT south of Cuba, out toward the Cabezon and Deadman Peaks country and back. The 53 miler is the signature, about 53 miles and roughly 7,560 feet of gain. The Backbone 100 doubles it for about 106 miles and around 12,600 feet. The 55K shares the same start but turns around early at the La Ventana remote aid, and the 30K turns at Mesa Portales up on the mesa. None of it is one big climb. It is hundreds of small ones, and that is the whole trick of the place.

The rollers: small climbs that quietly add up

There is no signature wall here, no single climb you train for. Instead the trail rolls constantly across mesas and badlands, short up, short down, over and over for miles. That is exactly why people get fooled. The early rollers feel easy, so you run all of them hard, and then somewhere in the back half all those little climbs have drained your legs and you are walking pitches you floated past in the morning. Treat the first half like recovery effort and let the rollers come to you.

The footing keeps you honest too. It shifts between packed sand, loose rock, and stretches of slickrock, and the single-track is faint in places, so you are always reading the ground a little. It is not technical in the scary sense, but it never lets you switch your brain off and just cruise.

The exposure: high desert with no shade

This is open country the entire way. Mesas, hoodoos, badlands, old volcanic plugs, with Cabezon Peak standing off in the distance, and essentially zero shade from start to finish. On a calm clear day that means full sun on you all afternoon even though the air is cool. On a windy one it means nowhere to hide. Either way, the exposure is a real part of the difficulty, and it is why you cannot ration water out here.

The flip side is that the views are the reason to come. It is genuinely beautiful, big quiet high-desert scenery you do not get at most races. Just go in knowing the same openness that makes it stunning is what wears you down.

The 100 and the night: remoteness, cold, and crew

The Backbone 100 is two laps of the 53 mile course, so by the second loop you already know every roller and every long dry gap, which is a gift and a curse. The real new factor is the night. The high desert drops near or below freezing after dark, so you run the late miles cold, alone, and far from anything. Crew access is limited to a couple of points like Mesa Portales and the turnaround, and pacers are allowed on the back portion, so plan your warm layers, lights, and crew meetings around those specific spots.

Late-race lows hit hard here precisely because the course is so remote and exposed. There is no crowd, no town, just you and a faint trail under a headlamp. Have a plan for the bad patch before you are in it: keep eating, add a layer before you are cold, and break the remaining distance into aid-to-aid chunks instead of staring at the whole number.

Aid and self-support between stations

Aid sits roughly every 9 miles, with named stations like Mesa Portales and the turnaround, and they carry water, gels, electrolytes, and warm food. It is a cupless race, so you bring your own bottle or soft flask. The thing to respect is the spacing: in this terrain, a 9 mile exposed gap can take a long time, so leave each station with enough fluid and calories to actually get to the next one in the heat of the day.

Because it is so remote, do not count on bailing easily mid-course. Carry what you need, keep your own systems dialed, and use crew and drop bags (where they are allowed) to reset layers and restock for the next long carry.

Pacing strategy for a deceptive rolling course

Deadman Peaks is an effort-management race, not a pace-chart race. The gain hides in hundreds of small climbs, so the whole game is running the early rollers easy and saving your legs for the back half and, on the 100, the cold night.

Run the rollers by effort, not by your flat pace

Your road pace will lie to you out here. Each little climb is short enough that you can power up it, but do that on every one and the cumulative cost wrecks you by mile 35 or 70. Hold a steady, easy effort up the rollers, hike the steeper or sandier pitches without ego, and let the descents come for free. Grade-adjusted pace is the tool that turns your real fitness into honest targets for terrain like this, so you stop reading the watch and start running the effort.

Build a finish prediction off the real vert

Do not guess your Deadman Peaks finish off a flat 50 or a road marathon time. The rolling 7,560 feet on the 53, the sand and slickrock footing, and the long exposed gaps all add real time, and the 100 stacks all of that twice plus a night. A vert-aware finish prediction gives you a realistic window, and then you can work backward into the midnight and Sunday-afternoon cutoffs and the intermediate aid cutoffs, so you actually know your buffer at each checkpoint instead of hoping.

⏵ Free tools to pace this course

Fueling strategy for a long, dry, remote day

Most runners are out here a long time, anywhere from a few hours on the 30K to well over a day on the Backbone 100, with aid roughly every 9 exposed miles. That makes carbohydrate, sodium, and fluid as important as fitness, and the cool air makes it easy to under-fuel.

Carbs: steady, trained, and easy to get down

Aim for around 60 to 90 grams of carbohydrate per hour, and only push the high end if your gut is trained for it. The danger at Deadman Peaks is that the cool, dry air dulls your appetite, so it is tempting to coast on too little and then bonk in the back half. Keep the intake steady and simple, lean on what goes down easily late, and rehearse your exact hourly carb rate on long runs so 70 or 80 grams an hour feels routine, not like an experiment on race day.

Sodium and fluid: cover the gaps, do not ration

Plan sodium around 500 to 700 mg per liter of fluid, more if you are a heavy or salty sweater, and do not skimp just because the desert cold tricks you into feeling like you are barely sweating. You are. The bigger rule is fluid carry: leave every aid station with enough to get all the way to the next one across the exposed gap, since this is a cupless, very remote course where running dry between stations is a genuine problem. Weigh yourself before and after a long training run to find your real sweat rate, then build the plan around your own number.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and the Deadman Peaks distance you picked 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 Deadman Peaks course profile, and your projected splits. Summit Line reads your real training, builds a plan for the relentless rolling vert, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Deadman Peaks Trail Run FAQ

How hard is the Deadman Peaks Trail Run?

The race calls itself deceptively hard, and that is the honest word for it. The profile looks tame because nothing here is a big mountain climb, it just rolls and rolls between about 6,350 and 7,400 feet, but those short repeated climbs add up fast. The 53 miler stacks roughly 7,560 feet of gain and the Backbone 100 around 12,600, all on faint single-track with sandy, rocky, slickrock footing and almost no shade. It is also very remote with long gaps between aid, so you carry more than you think and you handle a cold start that turns into full exposure by midday. None of it is technical or scary, but the relentless rolling terrain and the desert exposure make it a real test.

How much climbing is in the Deadman Peaks 53 miler and the Backbone 100?

There is no single big climb here, just a long series of short ones. The 53 miler runs an out and back toward the Cabezon and Deadman Peaks area with about 7,560 feet of total gain (and the same in loss) across rolling mesas and badlands. The Backbone 100 is essentially that course doubled, so figure roughly 12,600 feet of climb over about 106 miles. The 55K is the same start as the 53 but turns around earlier at the La Ventana remote aid, around 4,900 feet of gain. Because the climbing is spread across hundreds of little bumps, it sneaks up on you, so pace the early rollers easy.

How should I fuel for the Deadman Peaks Trail Run?

Fuel it like a long day with long carries, because aid sits roughly every 9 miles and the gaps are exposed and dry. Most runners do well on about 60 to 90 grams of carbohydrate per hour, leaning to the high end only if your gut is trained for it, plus sodium that climbs with how much you sweat, often 500 to 700 mg per liter of fluid. It is a cupless race, so bring your own bottle or soft flask, and carry enough fluid and calories to cover the full gap to the next station instead of rationing and arriving empty. The cool November air hides how much you are losing, so do not skip salt just because you do not feel hot. Run your own numbers with the free ultra fueling calculator.

What are the cutoff times for the Deadman Peaks Trail Run?

The big races have generous but real limits. The 53 miler has finished around a midnight cutoff (roughly 17 hours), the 55K runs to about 10:00 PM, and the Backbone 100 has a hard finish around 5:00 PM on Sunday, which is roughly 35 hours, with intermediate cutoffs at the turnaround, the remote aid, and Mesa Portales on the way home. The shorter 30K and 8 to 10 mile options have their own afternoon cutoffs. These have moved as the event has added distances, and the intermediate aid cutoffs are the ones that catch people, so confirm the exact current times in the race-day details before you start.

What is the terrain and weather like at Deadman Peaks?

You are running the Continental Divide Trail through high-desert badlands: faint single-track and some jeep road, footing that switches between sand, rock, and slickrock, and big open country past mesas, hoodoos, and volcanic plugs with Cabezon Peak off in the distance. There is essentially no shade the whole way. Early November out here is usually cold and dry, with highs in the mid 50s and overnight lows near or below freezing, though snow or rain can show up. So you start cold, get fully exposed to sun and wind by midday, and the 100 milers run through a genuinely cold high-desert night.

Is the Deadman Peaks 53 miler a good first 50 mile race?

It can be a smart choice for a prepared first-timer, and a lot of people use it exactly that way. The footing is rarely technical, the climbs are short, and the roughly 17 hour cutoff on the 53 gives committed runners real room to finish. What it asks for is specific prep: long runs on tired legs to handle the endless rolling climbs, practice carrying your own fluid and food across long dry gaps, and clothing that takes you from a freezing start to full midday exposure. If you respect the remoteness and the exposure and pace the early miles easy, it is a fair and beautiful place to go 50.

This guide is independent and for planning only. The course details, dates, distances, 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.