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⏵ Course guide · Vermont ultra

Vermont 50 Ultra Run Course Guide

The Vermont 50 is a New England institution: a rolling 50 mile (and a 50K) at Mount Ascutney that has run every last Sunday of September since 1993, shared with a simultaneous 50 mile mountain-bike race on the same dirt. There is no giant climb here, just thousands of feet of constant rollers across Vermont farmland. I will walk you through the course first, then give you a pacing and fueling plan that fits all those little hills. There are free calculators along the way to dial in your own numbers.

⏵ At a glance

Vermont 50 quick facts

Date
Sunday, September 27, 2026 (always the last Sunday in September)
Location
Mount Ascutney, West Windsor / Brownsville, Vermont
Distances
50 Mile and 50K
Elevation gain
50 Mile: about 8,900 ft · 50K: about 5,600 ft
50 Mile start
Runner wave 6:30 AM (waves begin 6:10 AM, meeting 5:30 AM)
50K start
8:00 AM (meeting 7:30 AM)
Cutoff
Course closes 6:30 PM (12 hr limit on the 50 Mile), with hard aid-station close times
Qualifier
No Western States, UTMB, or Hardrock qualifier status listed by the race

These facts come from the official race site and public listings. Check the current date, start times, cutoffs, and aid stations in the runner handbook before you commit. Race logistics change year to year.

The course: where the Vermont 50 is won and lost

The 50 mile is about 8,900 feet of gain over a point-to-point loop of dirt roads, jeep roads, and singletrack, roughly 67 percent trail or jeep road, 30 percent rolling gravel, and 3 percent pavement, winding across Green Mountain Horse Association land and private Vermont farms. The 50K covers about 5,600 feet, shares the early miles, then splits off and rejoins the 50 mile route around Greenall’s before taking the same finish.

No big climbs, just relentless rollers

This is the thing to understand about the Vermont 50: there is no Garvin Hill that breaks the race open, no single climb you train for and survive. The whole day is short, punchy ups and downs, one after another, on dirt and gravel and bits of singletrack. Every individual hill feels easy. That is exactly the trap. The vert adds up quietly, and if you run every little riser hard the cumulative cost wrecks your legs by the back half.

The footing is mostly friendly, not the rocky, root-choked stuff you get in the Whites. That tempts people into running everything. Resist it. Power-hike the steeper rollers from the gun, keep your effort flat instead of your pace flat, and you will have legs left when it counts.

Sharing the dirt with the mountain bikes

The Vermont 50 runs the ultra and a 50 mile mountain-bike race on the same course on the same morning, and that is a feature, not a bug. Bikes go off in waves just before the runner wave, so you will get passed by riders all day, especially on the gravel and jeep-road stretches. Listen for them, step to the right, let them through, and it is a non-issue. The shared course is a huge part of the festive, community feel that makes this race what it is.

Practically, it means do not zone out on the wider sections. Stay aware of what is coming up behind you, and treat the riders the way you would want to be treated. It flows fine once you get used to it.

The back half: where the rollers finally bite

Greenall’s, around the two-thirds mark, is a real checkpoint, both for the 50 mile and as the point where the 50K rejoins. From there the course takes the same finish: more rollers, the late aid stations, and a long grind home to the Ascutney base. The hills do not get bigger late, but your legs are cooked, so the same little climbs that felt trivial at mile 10 turn into walls at mile 40.

This is where the day is won or lost. The runners who paced the early rollers honestly and kept fueling are still jogging the ups. The ones who hammered the easy-feeling first half are reduced to a slow march. Train the downhills too: thousands of feet of descent on tired quads is its own kind of damage.

Pacing strategy for a rolling, all-day grind

With 8,900 feet of gain spread across hundreds of short rollers and almost no flat to coast on, the Vermont 50 is about managing cumulative effort, not chasing a pace chart. Run the hills by feel, not by your flat-ground splits.

Pace by effort on the rollers, not by the watch

Your flat-ground pace lies to you on a course like this, because you are never actually on the flat. What matters is grade-adjusted effort: hold a steady, sustainable output, power-hike the steeper risers, and let your pace bounce up and down while your effort stays even. The classic Vermont 50 mistake is running the easy-feeling early rollers too hard and paying for it over the last 15 miles. Use a grade-adjusted pace to turn your real fitness into honest hill-by-hill targets and you will not cook the first half.

Build a vert-aware finish prediction

Do not guess your Vermont 50 time off a road marathon or a flat 50K. The 8,900 feet of rolling gain, the constant up-and-down, and the back-half fade all add real time. A vert-aware finish prediction that accounts for this course’s climbing gives you a realistic window and lets you work back into the 6:30 PM course close and the aid-station cutoffs, so you actually know how much buffer you have at each checkpoint instead of hoping.

⏵ Free tools to pace this course

Fueling strategy for a long day of rollers

Most runners are out on the Vermont 50 mile for somewhere around 8 to 12 hours, and the 50K for a good chunk of a day too. That much time on your feet makes carbohydrate, sodium, and fluid every bit as important as fitness.

Carbs: steady and trained, hour after hour

For a day this long, aim for around 60 to 90 grams of carbohydrate per hour, and only push the higher end if your gut is trained for it. The aid stations on the Vermont 50 are well stocked and close enough together that you are never far from food, which is a real luxury, but you still have to keep eating on a schedule instead of grazing. Practice your exact race-day carb rate on long runs so 80-plus grams an hour feels routine, not like an experiment you are running at mile 35.

Sodium and fluid: match it to the weather

Late September in Vermont can swing from cold and rainy to surprisingly warm, so your sodium and fluid plan should flex with the forecast. A crisp day needs far less than a humid one. As a starting point, plan roughly 300 to 700 milligrams of sodium per liter of fluid, leaning higher in heat and humidity and if you are a heavy or salty sweater. 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 generic one.

⏵ Build your fueling plan

Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and the Vermont weather 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 Vermont 50 rolling profile, and your projected splits. Summit Line reads your real training, builds a plan for thousands of feet of rollers, and rehearses your fueling so race day is something you execute, not guess at.

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Vermont 50 FAQ

How hard is the Vermont 50 Ultra Run?

The Vermont 50 is a hard, relentlessly rolling course, but it is not a high-mountain race with one giant climb. The 50 mile packs roughly 8,900 feet of gain into hundreds of short, punchy ups and downs on dirt roads, jeep roads, and singletrack across private Vermont farmland, so there is almost no flat to recover on. There are no monster climbs, just constant work, and the 12-hour cutoff (course closes at 6:30 PM) is generous enough that most prepared runners finish if they keep moving. The 50K is shorter at about 5,600 feet of gain and covers a chunk of the same terrain.

How much climbing is in the Vermont 50?

The 50 mile has about 8,900 feet of total elevation gain, and the 50K has about 5,600 feet, per the official course descriptions. None of it comes from one big mountain. It is death by a thousand cuts: short, steep rollers on dirt and jeep roads and bits of singletrack, one after another, all day. That style of climbing is sneaky because every single hill feels easy and the total still adds up to a real day of vert.

What is the deal with sharing the course with mountain bikes?

The Vermont 50 is run as a 50 mile mountain-bike race AND an ultra run on the same course on the same morning, which is part of what makes it special. Bikes start in waves a bit before the runner wave, so you will get passed by riders for much of the day, especially on the gravel and jeep-road sections. Step to the side, let them through, and it works out fine. It is a friendly, festive scene, and the shared course is a big reason the race has the atmosphere it does.

What are the cutoff times for the Vermont 50?

The course closes at 6:30 PM, which is a 12-hour limit for the 50 mile field. The aid stations along the way have hard close times, and if you arrive after a station has closed you are pulled, so you cannot save all your buffer for the finish. The exact intermediate cutoffs shift year to year with the course routing, so confirm the current aid-station close times in the runner handbook before race day and plan to stay comfortably ahead of them.

What is the terrain and weather like at the Vermont 50?

The 50 mile is about 67 percent trail or jeep road, 30 percent smooth rolling gravel road, and 3 percent pavement, winding through Green Mountain Horse Association land and private Vermont farms. The footing is mostly good, not super technical, but it is relentlessly up and down. Late September in Vermont can be anything: crisp and perfect, cold and rainy, or surprisingly warm, and the leaves are often just starting to turn. Pack for a range and check the forecast the week of, because a cold rain on this course is a very different day than blue skies.

Is the Vermont 50 a good first 50 miler?

It is one of the more popular choices for a first 50 mile, and for good reason. The footing is mostly forgiving, the aid is well stocked, the 12-hour cutoff gives most prepared runners room, and the rolling profile means no scary technical descents or exposed alpine ridge. That said, do not let the lack of big mountains fool you: 8,900 feet of constant rollers will wear down your legs and your mind, so train the hills, rehearse your fueling, and practice hiking the ups efficiently. If you want a slightly shorter first ultra on the same terrain, the 50K is a great stepping stone.

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.