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ET Full Moon Midnight Marathon Course Guide

The ET Full Moon Midnight Marathon is a cult-classic Calico Racing road race that starts at midnight on the Extraterrestrial Highway outside Rachel, Nevada, deep in Area 51 country. There is a 51K (named for Area 51), a marathon, a half, a 10K, and a 5K, and you run them by moonlight on smooth high-desert highway with the stars overhead. I will walk you through what this course actually asks of you, then give you a pacing and fueling plan built for a midnight start and hours in the dark. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

ET Full Moon Midnight Marathon quick facts

Date
August 1 to 2, 2026 (Saturday night into Sunday), weekend closest to the full moon
Location
Extraterrestrial Highway (NV-375), departing Rachel, Nevada, in Area 51 country
Distances
51K, Marathon, Half Marathon, 10K, and 5K
Elevation
High desert, course sits roughly 4,500 to 5,600 ft; rolling highway, no single official gain figure published
Start
Midnight waves: Marathon and 51K 12:01 AM, Half 12:30 AM, 10K 12:45 AM, 5K 12:50 AM
Surface
Paved high-desert highway, out-and-back, run in the dark
51K cutoff
About 8 hours; confirm current cutoffs with the race
Qualifier
Not a Western States, Hardrock, or UTMB qualifier (a paved road ultra, not a trail series race)

These facts come from the official race site, RunSignup, and findmymarathon. Start times, the date, and cutoffs can shift year to year, so confirm the current race-day details before you commit. The race does not publish a single total elevation-gain number, so I keep that general here.

The course: where ET Full Moon is won and lost

This is a paved out-and-back on NV-375, the lonely two-lane that runs along the edge of Area 51. Smooth highway, high desert sitting somewhere around 4,500 to 5,600 feet, and a road that rolls more than it lies flat. The whole race happens in the dark, and that, not the terrain, is the thing you have to respect.

The midnight start and the long dark out-and-back

You line up at midnight under a full moon, the marathon and 51K go first right around 12:01 AM, and you head out the ET Highway into real darkness. There are no streetlights out here. Your headlamp and the moon are it, and the road just unrolls in front of you toward a turnaround and back. The 51K runs the longest version of that out-and-back, splitting off from the marathon late before it loops home, so you spend the most time alone on the road.

The trap on a course like this is the monotony. Smooth pavement and a straight dark highway make it very easy to drift, either pushing too hard because nothing hurts yet, or zoning out and letting your effort sag without noticing. Break the night into chunks between the turnarounds and the aid, and run each chunk on purpose. Don’t let the road hypnotize you.

Rolling road, not flat road

Do not show up expecting a pancake. The ET Highway rolls through the basin, so you get long gradual grades up and down in both directions. None of it is steep, but at altitude in the middle of the night those gentle climbs add up, and a grade you would not even notice fresh can quietly tax you at mile 20-something. Treat the ups as a cue to ease your effort and the downs as free speed you take without hammering your quads.

Because it is paved and never technical, your legs take a different kind of beating than on trail: it is the repetitive, same-cadence road pounding that gets you, not rocks and roots. If you have trained mostly on soft trail, get some road miles in your legs before this so the pavement does not surprise them.

The dark, the altitude, and staying mentally in it

The hardest miles here are the small-hours miles, somewhere around 2 to 4 in the morning, when your body clock wants to be asleep and the highway is pitch black and endless. This is where people quietly fall apart, not from the legs but from the head. Caffeine timed for that low, a real headlamp with a backup light, and a plan to keep eating on schedule are what carry you through.

You are also at real elevation in dry desert air, so the cool night temperatures can fool you into drinking too little. Keep sipping even when you do not feel hot. The reward for grinding through the dark is the desert at dawn, and finishing as the sun comes up over the basin is the whole reason this race exists.

Pacing strategy for a rolling midnight road ultra

On smooth highway your splits actually mean something, unlike a mountain race, so this is one of the rare ultras where a real pace plan pays off. The catch is the rolling grades and the dark, which both nudge you off your numbers if you are not paying attention.

Adjust your target for the rolling grades

Even on a road course the gentle ups and downs shift your real effort, so do not just lock a single flat pace and grind it. Use a grade-adjusted pace to see what an even effort actually looks like on the climbs versus the descents, then hold effort steady and let the pace float a little with the terrain. That keeps you from burning matches on the gradual uphills early, which is exactly the mistake that wrecks the back half on a deceptively rolling highway.

Build a realistic finish target and work back from the cutoff

Predict your finish off a recent road race or long run rather than guessing, then sanity-check the 51K against that roughly 8-hour cutoff so you know how much cushion you really have through the night. A midnight start means you are running into the predawn, so knowing your honest finish window helps you plan caffeine, layers, and when to expect daylight. Use a race-time prediction and an equivalent-performance estimate together to set a goal you can actually hold when you are tired and it is 3 AM.

⏵ Free tools to pace this course

Fueling strategy for running through the night

The mild night temps make fueling easier than a hot desert day, but the overnight timing makes it weirder. Eating real calories at 2 AM when your gut wants to be asleep is its own skill, and it is what separates the runners who hold pace from the ones who fade.

Carbs: keep them coming through the small hours

Aim for somewhere around 60 to 90 grams of carbohydrate per hour, and lean to the higher end only if your gut is trained for it. The challenge here is not heat killing your appetite, it is your body clock: in the middle of the night you simply do not feel like eating, so you have to stay on a schedule and take in calories you would rather skip. Practice eating on hot or late long runs so getting down 250-plus calories an hour in the dark feels routine rather than like a fight.

Fluids, sodium, and a little caffeine for the night

The cool, dry desert air hides how much you are sweating, so keep drinking on a schedule even when you do not feel thirsty, and salt to taste with roughly 400 to 700 milligrams of sodium per liter depending on how salty a sweater you are. Caffeine is your real weapon on this one: time a dose for that 2 to 4 AM low so you stay sharp on a dark, monotonous highway. Weigh yourself before and after a long run to learn your real sweat rate, then build the plan around your own number instead of a generic chart.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and a midnight ultra 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 ET Full Moon course profile, and your projected splits. Summit Line reads your real training, builds a plan for a rolling midnight road ultra, and rehearses your fueling so race night is something you execute, not guess at.

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ET Full Moon Midnight Marathon FAQ

How hard is the ET Full Moon Midnight Marathon?

It’s hard in a way that has nothing to do with vert. The footing is easy (it’s paved highway), but you start at midnight, you run in the dark for hours, and the high desert is wide open with long lonely stretches and very little to break up the road. The 51K carries about an 8-hour cutoff, the marathon and the shorter distances have plenty of time, so the real challenge is staying awake, keeping your effort honest on a road that lulls you, and fueling through the middle of the night when your body wants to be asleep. Treat it as a mental and pacing test more than a physical climbing test.

How much climbing is in the ET Full Moon course?

The race does not publish a single total elevation-gain number, so I will not invent one. What I can tell you is the course runs on the Extraterrestrial Highway through high desert that sits roughly between 4,500 and 5,600 feet, and the road rolls rather than stays flat, so you do get gradual grades both directions on the out-and-back. It is nothing like a mountain ultra, but do not expect a pancake-flat road marathon either. Plan for steady rolling terrain and treat the gentle climbs as a chance to settle your effort, not push.

What time does the ET Full Moon Midnight Marathon start?

It’s a true midnight race. The marathon and the 51K go off right around 12:01 AM, then the half marathon starts about 12:30 AM, the 10K about 12:45 AM, and the 5K about 12:50 AM, so the shorter races chase the long ones down the highway. The whole point is to run by moonlight on the weekend closest to the full moon. Bring a headlamp with fresh batteries plus a backup, because once you’re out on the ET Highway there are no streetlights and the dark is real.

What are the cutoff times for the ET Full Moon races?

The 51K runs on about an 8-hour cutoff, which is generous for most trained runners given the flat-ish paved footing, but the clock still runs through the small hours of the morning when fatigue hits hardest. The marathon and the shorter distances have comfortable time limits. Because it is a midnight start, finishing means running into the predawn and sometimes past sunrise, so plan your pacing around being out there a long time in the dark. Always confirm the exact current cutoffs in the official race-day details before you commit.

What is the course and terrain like at the ET Full Moon Midnight Marathon?

It’s a paved out-and-back on the Extraterrestrial Highway (NV-375) departing the tiny town of Rachel, the same lonely two-lane road that runs along the edge of Area 51. The surface is smooth highway, so this is a road race, not a trail race, but it’s high desert at altitude with open sky, distant mountains, and long uninterrupted straightaways. For 2026 the 51K uses a new out-and-back layout sending runners up the highway to a turnaround and back, splitting off from the marathon late. Expect quiet, dark, exposed road with very few landmarks, which is exactly what makes it special and what makes pacing by feel so important.

What should I wear and expect for weather at the ET Full Moon?

Rachel sits at altitude and runs about 15 degrees cooler than the Las Vegas valley, and because you run overnight in August the temperature tends to sit in the 60s Fahrenheit, which is genuinely pleasant for an ultra. That said, high desert nights swing, so it can feel warm at the midnight start and cooler in the predawn hours before sunrise. Dress for a mild night with the option to dump a layer, carry your own light, and bring sun protection if you will still be moving after the sun comes up. It is dry air at elevation, so do not let the cool temps fool you into underdrinking.

This guide is independent and for planning only. The course details, date, start times, and cutoffs 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.