The 2026 Champlain Islands Marathon has concluded.Share your finish2026 Results

Champlain Islands Marathon

Race complete
South Hero, VT, USA · October 18, 2026·
clear-day38°·50° high·Windy·Dry
9
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Race Day Weather

clear-day
38°at start
57° high
Windy
Dry
Your goal
0:00:00

Cool temps, moderate winds ahead

Runners will face starting temperatures around 38°F, climbing to 57°F by the finish. Winds will be moderate at 18 mph from the SE, providing a mix of headwind and tailwind throughout the course. With humidity around 60%, pacing should remain conservative, especially in the early laps as temperatures rise. A light layer may be beneficial during pre-race warm-ups to combat the chill.

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Pace Calculator

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Race Plan

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A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
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Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

Race Info

The USATF-certified (VT24002JK) marathon and half marathon begin and end at Folsom Elementary School in South Hero, VT, near the former home of Clarence H. DeMar, seven-time Boston Marathon winner. The half marathon course is out and back along the west shore of South Hero and Grand Isle, through farms, apple orchards, and summer cottages, with flat to rolling, entirely paved terrain. The marathon is two laps of the half marathon course. Start/finish elevation is about 190 feet, with a high point of 210 feet (miles 1 and 25) and a low point of 100 feet. The marathon cutoff is 6 hours; the half marathon cutoff is 4 hours. The course qualifies for Boston Marathon entry. The race was formerly named the Green Mountain Marathon; its current certification (VT24002JK) supersedes the earlier certification issued under that name. Wikipedia

Race weekend

Sunday, October 18
8:30 AMMarathon (26.2 mi)
8:30 AMHalf Marathon (13.1 mi)

FAQ

When is the 2026 Champlain Islands Marathon?

The 2026 Champlain Islands Marathon will be held on Sunday October 18, 2026.

Is the Champlain Islands Marathon a Boston Marathon Qualifier?

Yes, the Champlain Islands Marathon is an official Boston Marathon qualifier.

What is the time limit for the Champlain Islands Marathon?

The time limit for the Champlain Islands Marathon is 6 hours.

What will the weather be like for the 2026 Champlain Islands Marathon?

The forecast calls for a high of 57°F and a low of 28°F with a 0% chance of rain.

Historical Weather

Based on 14 years of data
Avg Temp
51°F
L:44° H:56°
RunScore
9
Conditions
Rain Freq
7%
1 of 14 yrs
Wind8mph
Dew40°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
cloudy
38°/50°-
9
2025
clear-day
43°/65°-
7
2024
partly-cloudy-day
37°/60°-
9
2023
cloudy
45°/47°-
10
2022
clear-day
39°/56°-
10
2021
partly-cloudy-day
47°/57°-
9
2019
partly-cloudy-day
44°/57°-
10
2018
partly-cloudy-day
38°/54°-
10
2017
partly-cloudy-day
62°/67°-
5
2016
partly-cloudy-day
51°/56°-
10
2015
partly-cloudy-day
47°/57°-
9
2014
clear-day
38°/53°-
10
2012
cloudy
44°/47°Light
10
2011
partly-cloudy-day
50°/55°-
10