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⏵ Course guide · Utah ultra

Goblin Valley Trail Runs Course Guide

The Goblin Valley Trail Runs are a fall desert trail event out at Goblin Valley State Park near Green River, Utah, and they are a different animal from the big mountain ultras. This is flowing, runnable singletrack winding through thousands of hoodoos, the mushroom-shaped rock goblins the park is named for, on a high-desert plateau. There is a 50K, a marathon, a half, a 10K, and a 5K. I will walk you through the course first, then give you a pacing and fueling plan that fits runnable desert terrain and a hard course close. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Goblin Valley Trail Runs quick facts

Date
Saturday, November 7, 2026
Location
Goblin Valley State Park, near Green River, Utah (San Rafael Swell)
Distances
50K, Marathon, Half Marathon, 10K, 5K, plus a kids 1-mile
Elevation gain
Modest for a trail ultra. Runnable high-desert singletrack on a plateau around 5,000 ft, not a mountain race
Start
50K and Marathon 7:00 AM MST · Half 7:30 AM · 10K and 5K 8:00 AM
Cutoff
Course closes 1:00 PM MST (about a 6 hr window for the 50K). Confirm 50K-specific cutoffs
Qualifier
No Western States, UTMB, or Hardrock qualifier status listed by the race

These facts come from the official race host (Elevation Culture) and the public race listings. The 50K is new for 2026, so check the current date, cutoffs, and aid stations in the race-day details before you commit. Race logistics change year to year.

The course: where Goblin Valley is won and lost

All the distances share the same character: flowing singletrack looping through the goblin-studded desert near the park, on a plateau sitting around 5,000 feet. The vert is modest and runnable, so unlike a mountain 50K you are not hiking long climbs. That sounds easy, and in a way it is, but it also means the clock never really lets up, because you are meant to run almost all of it.

Runnable desert singletrack, not a climbing race

The thing to get your head around is that Goblin Valley rewards honest, sustained running more than big-engine climbing. The trails roll through hoodoo fields and open desert with short ups and downs, not the long sustained grades you train for at a place like Speedgoat or Bryce. If you have been grinding hill repeats expecting a power-hike race, you will want to shift that prep toward running economy and being able to hold a comfortable pace for hours.

The footing is classic Utah desert: hardpack and sand mixed with rockier, slickrock-edged sections, plus a few spots where soft sand will slow you down and nibble at your energy. None of it is brutally technical, but quick feet and paying attention still help, especially late when you are tired and the trail gets sandy.

Exposure and the desert sun

There is almost no shade out here. The hoodoo country is wide open, and even in early November the high-desert sun is strong during the middle of the day. The temperature can read cool, but the sun load on exposed trail is real, and it is easy to under-drink because you do not feel like you are baking. Sunglasses, a hat or visor, and sunscreen are not optional, and neither is drinking to a plan.

Remember this is a cupless race, so you carry your own bottle or soft flask. That is a good thing here: it lets you sip steadily across the open stretches instead of waiting for the next aid station to remember to drink.

The clock: a 1 PM course close

Here is the part people overlook because the terrain looks gentle. The course closes at 1:00 PM, and with the 50K and marathon going off at 7:00 AM that is about a 6-hour window for the long stuff. On runnable trail that is plenty for a fit runner, but it is not a stroll, so you cannot dawdle at aid stations or fall apart in the back half. The half, 10K, and 5K start later in the morning and have all the time they need.

The 50K is brand new for 2026 and the race has not posted separate intermediate cutoffs, so do not assume. Pull the current race-day details, confirm the exact 50K time limit and any checkpoint cutoffs, and build your plan against them.

Pacing strategy for a runnable desert ultra

Because Goblin Valley is low-vert and runnable, pacing here is closer to a long trail race than a mountain slog. You are not banking time on climbs or bombing technical descents. You are holding a smart, even effort for hours and not letting the open desert lull you into starting too fast.

Run even, and do not torch the first hour

The classic mistake on a runnable course is going out hot because the trail feels easy and the legs are fresh. Do not. Settle into an effort you can hold deep into the back half, treat the short rises as places to ease off rather than attack, and let the descents come to you. Even a low-vert course still has grade, so use a grade-adjusted pace to turn your flat fitness into honest targets for the little ups and downs, and you will not cook yourself in the first 90 minutes.

Build a realistic finish prediction, then race the cutoff

With a 1:00 PM course close, knowing your real finish window is not optional, it is how you make sure you beat the clock. Do not guess your Goblin Valley time off a road PR. Build a finish prediction that accounts for the trail surface and the modest vert, then work backward into the start time so you know what pace keeps you safely ahead of the close. If you have a recent race result, convert it into an equivalent goal for this distance so your target is grounded in fitness you actually have.

⏵ Free tools to pace this course

Fueling strategy for runnable miles and dry desert air

On a runnable course you are working steadily the whole way, so the fuel has to keep coming. Add in dry desert air, strong sun, and a cupless format, and carbohydrate, sodium, and fluid become just as important as your fitness.

Carbs: steady and trained

For an effort in the 4 to 6 hour range for most 50K runners, aim for around 60 to 90 grams of carbohydrate per hour, and only push the higher end if your gut is trained for it. Because you are running most of the course rather than hiking, your stomach is working hard too, so keep intake steady and easy to get down instead of gambling on big late doses. Practice your exact race-day carb rate on long runs so 80-plus grams an hour feels normal, not like an experiment.

Sodium and fluid: respect the dry air, carry your own

Cool temperatures fool people in the desert. The air is dry and the sun is strong, so you can lose more fluid and salt than the thermometer suggests. Plan your sodium around your own sweat (often a few hundred milligrams per hour, more if you run salty), and since this is a cupless race, carry enough in your own bottle or flask to drink steadily across the shadeless open stretches instead of rationing to the next aid. 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 desert conditions 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 Goblin Valley course character, and your projected splits. Summit Line reads your real training, builds a plan for runnable desert miles, and rehearses your fueling so race day is something you execute, not guess at.

Start free →Explore the demo

Goblin Valley Trail Runs FAQ

How hard is the Goblin Valley Trail Runs 50K?

It is a real 31-mile ultra, but the difficulty here is the desert and the distance more than the climbing. Goblin Valley sits on a high-desert plateau around 5,000 feet, so the singletrack is genuinely runnable with rolling, modest vert rather than big mountain climbs. The catch is exposure and footing: sandy, rocky desert trail with almost no shade and a hard course close at 1:00 PM, which gives the 50K roughly a 6-hour window from the 7:00 AM start. If you can run a steady, fueled effort on tired legs and you respect the sun and the cutoff, it is very doable. The 50K is new for 2026, so treat the exact cutoffs as something to confirm with the race.

How much climbing is in the Goblin Valley Trail Runs?

Less than almost any other trail ultra you will look at. The course winds through the hoodoo country near Goblin Valley State Park on a desert plateau, so you get rolling singletrack with modest, runnable elevation gain instead of long sustained climbs. The race does not publish a single official ascent figure, and the 50K is new for 2026, so pull the current course map (the host shares interactive maps) to see the real profile before race day. Plan on this being one you actually run most of, not hike.

How should I fuel for the Goblin Valley Trail Runs 50K?

Because the terrain is runnable, you are working hard the whole way, so keep the carbs coming. Most runners do well on roughly 60 to 90 grams of carbohydrate per hour, leaning to the higher end if your gut is trained for it. The desert air is dry and the sun is strong even in November, so you can sweat more than the cool temperatures suggest, which means staying on top of sodium and fluid matters. This is a cupless race, so you have to carry your own bottle or flask, and that actually helps you drink to a plan instead of only at aid. Run your numbers for your weight, goal time, and the forecast with the free ultra fueling calculator.

What are the cutoff times for the Goblin Valley Trail Runs?

The published detail is that the course closes at 1:00 PM MST. With the 50K and marathon starting at 7:00 AM, that works out to about a 6-hour window for the longer distances, and the half, 10K, and 5K start later so they have plenty of room. The 50K is new for 2026 and the race has not published separate intermediate cutoffs, so confirm the exact 50K time limit and any checkpoint cutoffs in the current race-day details before you commit.

What is the terrain and weather like at Goblin Valley?

The course is flowing desert singletrack through the surreal hoodoo formations the goblins the park is named for, near Green River and the San Rafael Swell. Footing is the classic Utah desert mix of hardpack, sand, and slickrock-edged trail, mostly runnable but rocky in spots, and there is very little shade. Early November out there tends to be cool and dry: highs often in the upper 50s to low 60s Fahrenheit and lows near or below freezing, with intense high-desert sun during the day. You can start cold and finish warm, so dress in layers you can shed and do not underestimate the sun just because the air is cool.

Is the Goblin Valley Trail Runs 50K a good first 50K?

It is one of the friendlier 50Ks to pick as a first ultra, mostly because the runnable, low-vert desert terrain takes the big mountain climbs out of the equation. The honest challenges are the distance itself, the exposure, the dry desert air, and the 1:00 PM course close, so you still need real long-run fitness and a fueling and hydration plan you have rehearsed. If you can comfortably cover the time on your feet and you carry enough fluid and calories for a cupless desert race, this is a great place to run your first 50K. As always, confirm the current cutoffs since the 50K is new for 2026.

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, and the 50K is new for 2026, 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.