One of the five races that make up the Grand Slam of Ultrarunning, run every July on rolling Vermont dirt roads and horse trails since 1989. It’s also the only major American 100-miler where runners share the course with a separate, simultaneous horse endurance ride.
Quick facts
- Location: Silver Hill Meadow, West Windsor, VT (start/finish)
- Date: July 17–19, 2026 (start 4:00am Saturday, course closes 10:00am Sunday)
- Distance: 100 miles — roughly 68 miles dirt road, 30 miles horse trail, 2 miles pavement; 30-hour cutoff
- Website: vermont100.com
- Contact: Via vermont100.com — a fundraising event for Vermont Adaptive Ski and Sports
- Registration: Via the official race website; one of the five Grand Slam of Ultrarunning races.
Course description
Starting and finishing at Silver Hill Meadow in West Windsor, the Vermont 100 winds through the rolling farmland and forest of the southern Green Mountains on a course built almost entirely from rural dirt roads and private horse trails — it crosses more than 30 pieces of private property, for which the race has permission only on race weekend, so no maps are published and pre-running the course isn’t allowed. The route is marked with yellow pie plates by day and green glow sticks at night. Uniquely among 100-milers, VT100 shares its course with a separate, simultaneous horse endurance ride, making it the only known ultra of its kind in the country. There are no major climbs, but the organizers are clear that “there are plenty of little ones” — a steady, rolling profile rather than a single defining ascent.
Elevation change
Approximately 17,000 feet of total ascent — accumulated through a long string of rolling hills rather than any single major climb, which many runners find deceptively taxing over the full 100 miles.
Aid stations
25 aid stations support the 100-mile course, a mix of unmanned water/electrolyte stops and fully-stocked, staffed stations with crew access. Runners without crew may send drop bags to crewed aid stations. Pacers are permitted starting at the second pass through Camp 10 Bear, around mile 70 (runners 60 and older may have a pacer for the entire race); crews may only assist at designated crewed aid stations.
Special conditions & average temps
Mid-July in Vermont typically brings warm, humid days and cool nights, with the possibility of thunderstorms. The 2023 race was canceled outright after catastrophic flooding left roads washed out and the state under a federal disaster declaration — a reminder that Vermont’s rural dirt-road course is genuinely exposed to summer weather. All finishers receive a pair of finisher shorts; sub-24-hour finishers earn a large belt buckle, and over-24-hour finishers earn a small one.
Recent results — top 3, men & women
The 2023 race was canceled due to catastrophic flooding across Vermont; the years below are the three most recent runnings.
2025
- Men: 1. Justin Scheid 15:37:07 · 2. Thomas Hanlon 16:42:51 · 3. Conor Callahan 17:00:57
- Women: 1. Jenny Hoffman 17:29:27 (5th overall) · 2. Sarah Aponte 20:31:24 · 3. Laura Newton 20:36:19
2024
- Men: 1. Spencer Imbach 17:24:59 · 2. Aaron Stevens 17:28:58 · 3. Michael Scarlett 17:33:22
- Women: 1. Sarah Gage 17:19:45 (overall winner) · 2. Justyna Wilson 17:46:48 · 3. Lila Gaudrault 17:46:49
2022
- Men: 1. Roy Van Cleef 16:30:01 · 2. Nicholas Mamrak 17:09:22 · 3. Oliver Mednick 17:42:15
- Women: 1. Aliza Lapierre 18:35:25 · 2. Christine Mosley 19:20:45 · 3. Dylan Broderick 20:45:56
Registration deadline & how to get in
Registration opens through the official race website; recent years have moved to a start-list/waitlist process given demand from Grand Slam of Ultrarunning entrants and returning solo runners. Check vermont100.com for the current year’s opening date and entry process. No qualifying race is required, though as a Grand Slam race it draws a highly experienced field.
Traveling to this race? Find lodging near the venue via Hotels.com.