Summit Line

⏵ Course guide · Wyoming ultra

Run the Red Desert Course Guide

Run the Red Desert is a hidden-gem high-desert ultra out in the Northern Red Desert of Wyoming, point-to-point from the Whitehorse Creek Overlook to the old gold town of South Pass City. The elevation profile is gentle, so people underrate it. They shouldn’t. This one is about altitude, exposure, dry air, and miles of open country where you are mostly on your own. I’ll walk you through the course first, then give you a pacing and fueling plan that fits the terrain and the high desert, with free calculators along the way to dial in your own numbers.

⏵ At a glance

Run the Red Desert quick facts

Date
Saturday, September 26, 2026 (Wyoming Public Lands Day, the fourth Saturday in September)
Location
Northern Red Desert, Wyoming. Point-to-point from Whitehorse Creek Overlook to South Pass City Historic Site
Distances
50K and 30K (the shorter race ran as a 25K in earlier years)
Elevation gain
50K: about 2,902 ft · 30K: about 1,365 ft
Elevation
High desert, roughly 7,200 to 8,000 ft, averaging near 7,600 ft above sea level
Aid (50K)
About 4 full aid stations plus 1 hydration station · drop bags at Great Divide (mile 16)
Cutoff
Cutoffs are set and strictly enforced. No pacers allowed. Confirm current times with the race
Qualifier
No Western States, Hardrock, or UTMB qualifier status listed by the race

These facts come from the official race site, UltraSignup, and event reporting. The course, distances, start time, and cutoffs have changed over the years, so check the current race-day details before you commit. Race logistics change year to year.

The course: where Run the Red Desert is won and lost

Both distances start at the Whitehorse Creek Overlook (a 0.4-mile walk down a two-track from parking) and finish at South Pass City. The 50K has about 2,902 feet of gain, the 30K about 1,365, all of it rolling. There is no big climb to pace around here. The course is a maze of buttes, canyon rims, badlands, and long open two-track, and the way you win it is by not letting all that gentle ground trick you into running too hard too early.

The open country: gentle profile, sneaky-hard effort

Most of the day is rolling high-desert two-track through wide-open country, with views out to Continental Peak and the Oregon Buttes and miles of ground that barely changes. Because nothing here is steep, it is tempting to just run it all, and that is exactly the mistake. You are working at 7,000-plus feet in dry air, the small grades add up, and the wind can be in your face for a long time with nothing to break it. Settle into an effort you could hold all day and let the gentle terrain stay gentle.

This is also genuinely remote ground, near the Oregon Trail and the original South Pass, described as some of the largest unfenced country in the lower 48. That is the appeal, and it is also why you carry your own stuff and pay attention. Help is not close.

The Sweetwater crossing and the Fish Creek granite domes

You cross the Sweetwater River on a footbridge with a short wade, so plan on wet feet at least once. Sort your socks and shoes for that ahead of time instead of fighting blisters for the rest of the race. Not long after, the course turns to rock-hopping through the craggy Fish Creek granite domes, which is more careful scrambling than running.

These two sections are where a gentle-looking course suddenly asks for attention. Wet feet plus granite means slick rock, so slow down enough to place your feet, then open back up once you are through and onto the two-track again.

Aid, drop bags, and the run into South Pass City

The 50K has about four full aid stations plus a hydration station, and you can leave a drop bag (25-liter max) at the Great Divide aid station around mile 16, dropped at the start by 7:45 am. Use that drop bag well: it is your one chance mid-race to swap fluid, restock calories, and grab anything you want for the back half. The gaps between aid are long and exposed, so leave each station carrying enough to get all the way to the next one with margin.

The finish drops you into historic South Pass City, an old gold-mining town that is still partly lived-in. It is a great place to end a long desert day. Just remember pacers are not allowed, so those final open miles are yours alone, and that is where staying patient early really pays off.

Pacing strategy for a gentle profile at altitude

With only about 2,902 feet of gain and no real climbs, Run the Red Desert is a discipline race. The whole game is holding an honest, even effort across rolling open ground at 7,000-plus feet, not chasing a flat-road pace your legs cannot afford up here.

Run by effort, and respect the altitude tax

Your sea-level pace is a lie out here. Sitting near 7,600 feet on average, your aerobic ceiling is lower than it is at home, so the same heart rate buys you a slower pace, especially in the first hour while you adjust. Run the rolling ground by feel, hold something conversational early, and let the wide-open miles tempt the people around you into going too fast instead of you. If you can get to South Pass City or to elevation for a few days beforehand, do it; even a little altitude time helps.

Build a realistic finish window and work back to the cutoffs

Do not guess your time off a road 50K. The altitude, the dry air, the river crossing, and the granite scramble all add minutes that a flat profile hides. A vert-aware finish prediction that accounts for this course gives you a realistic window, and from there you can work backward into the aid-station cutoffs so you know how much buffer you actually have at each point instead of hoping. Since the race enforces its cutoffs strictly and changes details year to year, plan against the current numbers.

⏵ Free tools to pace this course

Fueling strategy for dry air and long open gaps

Most runners are out on Run the Red Desert for somewhere around 3 to 8 hours depending on the distance, in dry air at altitude with long, exposed stretches between aid. That makes carbohydrate, sodium, and fluid every bit as important as fitness.

Carbs: steady and trained, even when the air is dry

Aim for around 60 to 90 grams of carbohydrate per hour, pushing the higher end only if your gut is trained for it. Dry desert air and altitude can blunt your appetite and make it easy to quietly under-fuel, so keep your intake steady and on a schedule rather than waiting until you feel like eating. Practice your exact race-day carb rate on long runs so taking in food while you are working at altitude feels routine, not like an experiment.

Sodium and fluid: lean in harder than the temps suggest

The mild numbers on a high-desert day are deceptive. Dry air means you are losing fluid you never feel as sweat, so drink to a plan and lean toward the high end on sodium, roughly 500 to 700 milligrams per liter, more if you are a salty or heavy sweater. Carry enough to be self-sufficient across the long, remote gaps between aid instead of rationing to the next station and arriving empty, and use that Great Divide drop bag around mile 16 to top up for the back half. Weigh yourself before and after a long 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 dry Red Desert air 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 Red Desert course profile, and your projected splits. Summit Line reads your real training, builds a plan for the altitude and the long open miles, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Run the Red Desert FAQ

How hard is Run the Red Desert?

It is less about brutal climbing and more about remoteness, exposure, and footing. The 50K has only about 2,902 feet of total gain over rolling high-desert terrain, so on paper it looks gentle, but the whole course sits between roughly 7,200 and 8,000 feet, the wind and sun have nowhere to hide, and the dry air pulls more out of you than you expect. You also get a cold Sweetwater River crossing, rock-hopping through the Fish Creek granite domes, and long miles of open two-track where the scenery barely changes. Treat it with respect: the difficulty here is the environment, not the elevation profile.

How much climbing is in the Run the Red Desert 50K?

The 50K has about 2,902 feet of elevation gain spread across rolling buttes, canyon rims, and open country, per the official course description. There is no single monster climb, just a steady accumulation of short ups and downs, plus the granite-dome section that is more scramble than climb. The 30K has roughly 1,365 feet of gain. Because the gain is gentle and constant, the trap is running the whole thing too hard rather than blowing up on one big hill.

What is the terrain and weather like at Run the Red Desert?

Most of the course is dirt two-track and open high-desert footing through the Northern Red Desert, with a footbridge and short wade across the Sweetwater River (your feet will get wet) and some rock-hopping through the Fish Creek granite domes. You also travel ground near the Oregon Trail and original South Pass. Late-September weather out here is genuinely unpredictable at this elevation: some years it is hot and bone-dry, other years it turns cold, windy, and even sleety. Plan for both heat and cold, because the high desert can throw either at you in the same day.

How should I fuel and hydrate for Run the Red Desert?

Think of it as a 3 to 8 hour effort in dry air at altitude with long, exposed gaps between aid. Most runners do well on roughly 60 to 90 grams of carbohydrate per hour, and the dryness means you should lean on sodium and fluid harder than the mild temperatures suggest. The 50K has about four full aid stations plus a hydration station, with drop bags allowed at Great Divide around mile 16, but the stretches in between are remote, so carry enough to be self-sufficient. Run your own numbers for your weight, goal time, and the forecast with the free ultra fueling calculator.

What are the cutoff times for Run the Red Desert?

The race sets cutoffs and the directors and aid-station captains enforce them strictly for runner and volunteer safety, since this is remote country. Because the course and start details have shifted year to year, the exact overall and aid-station cutoff times are best confirmed in the current race-day information rather than assumed. Note that pacers are not allowed, so you run the open stretches on your own. Always check the latest official details before you toe the line.

Is Run the Red Desert a good first 50K?

It can be a great first 50K because the climbing is modest and the vibe is low-key and welcoming, put on by the Lander Running Club to show off and protect the Red Desert. The catch is the setting: high altitude, big exposure, a river crossing, and real remoteness with no pacers. If you respect the dry air, rehearse your hydration, get some time at elevation if you can, and come prepared to be self-sufficient between aid, a prepared first-timer has a very runnable day here. Just do not let the gentle elevation profile talk you into going out too fast.

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.