A trail runner on a grassy ridge above a sea of clouds

Vermont 100 Endurance Race

It is the only American 100-miler run alongside a simultaneous horse race.

Prepare for Vermont 100 Endurance Race

A plan built from your answers and your race date.

trail training plan

The Vermont 100 Endurance Race is held in the rolling countryside around Killington, Vermont. The course uses dirt roads, forest tracks and farm lanes between pastures and woodlots, with a long series of short climbs rather than sustained ascents. New England summer humidity is the main weather factor.

m. It is the only American 100-miler that hosts a simultaneous equestrian race on the same terrain. Proceeds go to Vermont Adaptive Ski & Sport.

The formats

2 formats on the program.

Format	Distance	Vertical gain
100 Mile	100 mi	5,182 m
100K	62 mi	—

Organizer information, checked on September 21, 2026 · vermont100.com

When to start

A build for this distance usually runs 12 to 24 weeks. Counted back from race day, that puts the start somewhere between January 25, 2027 and April 19, 2027.

These ranges are working conventions, not a research finding — no trial has compared plan lengths against each other. What matters more is that the plan was built for the weeks you actually have, rather than shrunk down from a longer one.

How to choose your start date

When to start

January 25, 2027

→ April 19, 2027

Worth reading before you enter

Races and distances Trail distances: what changes off the road Distance stops being the useful number. What decides a trail race is how long you are out, how much you climb, and how much the descents have wrecked your legs by the end. Read Training Eating and drinking: what’s proven, what isn’t This is where confident advice most often runs ahead of the evidence. Some of it is well tested. Some is opinion wearing a number. And one common habit can kill you. Read Races and distances When to start preparing your race Most plans fail before the first session, because the block started too late and everything had to be squeezed. Counting back from the date is the dullest and most useful thing you will do. Read

Questions

What is the date of Vermont 100 Endurance Race in 2027?

Vermont 100 Endurance Race is run on Friday, July 16, 2027 in Killington. Date published by the organizer, checked on September 21, 2026.

What distances does the Vermont 100 offer?

Two formats are available: a 100-mile race over 161 km with 5,182 m of vertical gain, and a 100K over 100 km. Both are run on the rolling dirt roads and trails of the Vermont countryside.

What makes the Vermont 100 different?

It is the only American 100-miler held at the same time as an equestrian race on the same course. Proceeds from the event also support the Vermont Adaptive Ski & Sport organization.

Other races

This list keeps growing; it draws no line. A race that is missing is prepared for in exactly the same way.

Honolulu · United StatesUltra HURT 100 Jan 16 Its five-loop, 20-mile-per-lap format carries a famously high drop-out rate. Bandera · United StatesUltra HOKA Bandera Endurance Trail Race January The HOKA Bandera Endurance Trail Race is a trail and ultra weekend held in Bandera, Texas, inside the Hil Moab · United StatesUltra Moab 240 Endurance Run January 7 km ultramarathon with 9,620 m of vertical gain, run as one continuous loop out of Moab, Utah. It is par Your race is not here? Tell us about your race You can prepare for it all the same. Any race, anywhere, and even a goal without a race.

Your race is on the calendar. Your plan should be too.

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