racecast.ioPartly cloudy throughout the day.
Light Rain
25%
Light Rain
25%
Details
Pre-Race
Race
Post-Race
Bounce free storage for your phone, keys and fuel on the run. FlipBelt Classic Running Belt.
When you buy through our links, we may earn a commission.
Wanna to know when the weather changes? .
Race Overview
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.
WikipediaFAQ
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 Qualfier?
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.
Champlain Islands Marathon Course Map
Loading Course Map...
Champlain Islands Marathon Weather History
Champlain Islands Marathon Weather Averages
Average Temp: 52°, Average Low: 42°, Average High: 61°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 49° | 52° | 54° | 56° | 58° | 59° |
| Feel | 48° | 51° | 54° | 56° | 57° | 58° |
| Rain | - | - | - | - | - | - |
| Wind | 5mph | 8mph | 8mph | 10mph | 10mph | 10mph |
| Dew | 41° | 41° | 41° | 40° | 41° | 41° |
| RunScore |  | | | | | |
Champlain Islands Marathon 2025
Oct 19, 2025
Clear conditions throughout the day.
Low: 43°, High: 74°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp |  49° | 59° | 61° | 65° | 67° | 70° |
| Feel | 49° | 59° | 61° | 65° | 67° | 70° |
| Rain | - | - | - | - | - | - |
| Wind | 1mph | 11mph | 16mph | 19mph | 22mph | 18mph |
| Dew | 44° | 46° | 46° | 47° | 48° | 50° |
| RunScore | | |  |  | | |
Champlain Islands Marathon 2024
Oct 20, 2024
Clear conditions throughout the day.
Low: 35°, High: 67°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 45° | 53° | 57° | 60° | 62° | 64° |
| Feel | 45° | 53° | 57° | 60° | 62° | 64° |
| Rain | - | - | - | - | - | - |
| Wind | 1mph | 1mph | 7mph | 11mph | 14mph | 14mph |
| Dew | 38° | 39° | 42° | 43° | 44° | 44° |
| RunScore | | |  | | | |
Champlain Islands Marathon 2023
Oct 22, 2023
Cloudy skies throughout the day with rain.
Low: 42°, High: 49°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp |  46° | 47° | 46° | 47° | 47° |  47° |
| Feel | 42° | 41° | 45° | 43° | 44° | 44° |
| Rain | - | - | - | - | - | light |
| Wind | 9mph | 12mph | 4mph | 7mph | 8mph | 6mph |
| Dew | 36° | 36° | 36° | 35° | 35° | 36° |
| RunScore | | | | | | |
Champlain Islands Marathon 2022
Oct 16, 2022
Becoming cloudy in the afternoon.
Low: 39°, High: 59°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 45° | 50° | 54° | 56° | 57° | 58° |
| Feel | 45° | 50° | 54° | 56° | 57° | 58° |
| Rain | - | - | - | - | - | - |
| Wind | 0mph | 3mph | 6mph | 8mph | 6mph | 8mph |
| Dew | 38° | 40° | 38° | 36° | 37° | 36° |
| RunScore | | | | | | |
Champlain Islands Marathon 2021
Oct 17, 2021
Partly cloudy throughout the day with rain.
Low: 45°, High: 60°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 51° | 54° | 57° | 56° | 58° | 59° |
| Feel | 51° | 54° | 57° | 56° | 58° | 59° |
| Rain | - | - | - | - | - | - |
| Wind | 5mph | 6mph | 7mph | 6mph | 7mph | 6mph |
| Dew | 44° | 45° | 45° | 44° | 43° | 43° |
| RunScore | | | | | | |
Champlain Islands Marathon 2019
Oct 13, 2019
Partly cloudy throughout the day.
Low: 42°, High: 60°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 50° | 55° | 55° | 57° | 58° | 59° |
| Feel | 48° | 55° | 55° | 57° | 58° | 59° |
| Rain | - | - | - | - | - | - |
| Wind | 6mph | 5mph | 7mph | 7mph | 8mph | 8mph |
| Dew | 40° | 38° | 36° | 36° | 35° | 35° |
| RunScore | | | | | | |
Champlain Islands Marathon 2018
Oct 14, 2018
Partly cloudy throughout the day.
Low: 35°, High: 56°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 44° | 48° | 51° | 54° | 55° | 56° |
| Feel | 44° | 46° | 51° | 54° | 55° | 56° |
| Rain | - | - | - | - | - | - |
| Wind | 1mph | 5mph | 6mph | 6mph | 5mph | 5mph |
| Dew | 36° | 35° | 34° | 32° | 31° | 32° |
| RunScore | | | | | | |
Champlain Islands Marathon 2017
Oct 15, 2017
Partly cloudy throughout the day with late afternoon rain.
Low: 56°, High: 74°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 62° | 63° | 64° | 67° | 71° | 71° |
| Feel | 62° | 63° | 64° | 67° | 71° | 71° |
| Rain | - | - | - | - | - | - |
| Wind | 15mph | 14mph | 17mph | 22mph | 20mph | 21mph |
| Dew | 56° | 56° | 57° | 57° | 58° | 58° |
| RunScore | | | |  | | |
Champlain Islands Marathon 2016
Oct 9, 2016
Partly cloudy throughout the day.
Low: 49°, High: 57°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 52° | 53° | 54° | 56° | 57° | 55° |
| Feel | 52° | 53° | 54° | 56° | 57° | 55° |
| Rain | - | - | - | - | - | - |
| Wind | 4mph | 10mph | 10mph | 11mph | 11mph | 12mph |
| Dew | 43° | 43° | 42° | 41° | 40° | 40° |
| RunScore | | | | | | |
Champlain Islands Marathon 2015
Oct 11, 2015
Partly cloudy throughout the day.
Low: 38°, High: 64°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 50° | 51° | 54° | 57° | 59° | 62° |
| Feel | 47° | 51° | 54° | 57° | 59° | 62° |
| Rain | - | - | - | - | - | - |
| Wind | 7mph | 12mph | 9mph | 12mph | 13mph | 13mph |
| Dew | 41° | 41° | 42° | 44° | 45° | 46° |
| RunScore | | | | | | |
Champlain Islands Marathon 2014
Oct 12, 2014
Clear conditions throughout the day.
Low: 35°, High: 55°
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 46° | 49° | 52° | 53° | 54° | 54° |
| Feel | 45° | 47° | 52° | 53° | 54° | 54° |
| Rain | - | - | - | - | - | - |
| Wind | 3mph | 7mph | 5mph | 9mph | 7mph | 8mph |
| Dew | 40° | 37° | 34° | 33° | 33° | 32° |
| RunScore | | | | | | |
Champlain Islands Marathon 2012
Oct 14, 2012
Partly cloudy throughout the day with rain clearing later.
Low: 40°, High: 54°, Moderate Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 45° | 45° | 47° | 47° | 47° | 49° |
| Feel | 40° | 41° | 44° | 46° | 46° | 48° |
| Rain | light | - | - | - | - | - |
| Wind | 9mph | 8mph | 5mph | 3mph | 4mph | 3mph |
| Dew | 41° | 42° | 42° | 43° | 44° | 45° |
| RunScore | | | | | | |
Champlain Islands Marathon 2011
Oct 16, 2011
Cloudy skies throughout the day with rain.
Low: 47°, High: 59°, Light Rain
| Time | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|
| Temp | 52° | 53° | 54° | 55° | 57° | 57° |
| Feel | 52° | 53° | 54° | 55° | 57° | 57° |
| Rain | - | - | - | - | - | - |
| Wind | 9mph | 6mph | 8mph | 9mph | 8mph | 10mph |
| Dew | 37° | 38° | 36° | 36° | 36° | 36° |
| RunScore | | | | | | |