
Champlain Islands Marathon & Half Marathon is a running race on October 18, 2026 in South Hero, VT, with entry fees from $60 to $80.
From the Organizer
DATE: Sunday, October 18, 2026
TIME: 8:30 AM
LOCATION: Folsom Elementary School, 75 South St, South Hero, VT 05486
The Full and Half Marathon will both start at 8:30 AM directly in front of the Folsom Elementary School.
The marathon and half-marathon begin and end near the house where Clarence H. DeMar, seven-time Boston Marathon Winner, once lived. The half-marathon course is out and back on the west shore of South Hero and Grand Isle; a land of farms, apple orchards, and summer cottages. The terrain is flat to rolling.
USATF Certification (VT24002JK)
The entire course is paved. The full marathon course is two out-and-backs of the half-marathon course.
The time cut off for the marathon is 6 hours. The time cut off for the half-marathon is 4 hours.
There will be an aid station approximately every 2 miles starting at mile 2 and stopping at mile 24 for a total of 12 aid stations (2-3 porta-potties on course). Water and electrolyte drink will be supplied at all aid stations. Additional assistance will be available to runners in the form of sweep vehicles.
Pre-registration is now open. This event has sold out in recent years. Register early for guaranteed entry and best pricing.
You may change the race distance. There is a $10 charge for switching from the full marathon to the half-marathon (no refund will be given for the difference in price). There is a $10 charge for changing from the half-marathon to the full marathon plus the difference in price. To transfer event follow these instructions:
1) Log into your Runsignup account at this link: https://runsignup.com/Profile#tab-upcoming-races
2) Find the Champlain Islands Marathon & Half Marathon section under "Upcoming Events" and Click on "Manage Registration"
3) Click on "Transfer Event" at the top.
4) Follow the prompts to continue the process.
Please confirm that you are registering for the correct event: Half-Marathon or Full Marathon before your complete your transaction. Thank you!
All participants will receive a race shirt.
Runners must be age 16 or older.
Other runners may pick up a friend or family member's race packet.
SkiRack is located at 85 Main Street, in Burlington, VT.
Awards will be given to the top overall male, female & non-binary finishers, the top masters, as well as the top finisher in each age-group. Please see the race director if you need leave before the awards ceremony.
Medals to all marathon and half-marathon finishers.
Island Lodging on the race course (primarily small inns and B&Bs):
Lodging at exit 16 off Route 89 (Colchester/Winooski)
Lodging at exit 14 off Route 89 (Burlington/South Burlington)
If you can picture the Lake Champlain Islands in mid-October, then you have reason to join us. If you have never seen Vermont or the 'Islands' in October, then you have even more reason to join us with your entire family.
Follow this link to hear what other runners have had to say about the our event.
The GMAA Champlain Islands Marathon is held for runners by runners. Our goal is to offer a quality marathon at an affordable price in a relaxed setting. Come join us!
As with any event, it takes volunteers to make things happen. If you or anyone you know would like to volunteer at our race, we would greatly appreciate it. We need volunteers in the following areas: Water Stops/Aid Stations, Crossing Guards/Course Marshals, Packet pick-up, Finish Line, Traffic/Parking, and Runner Food Preparation.
Please sign up on our Volunteer Registration Page
Please see "Race Day Instructions" sheet for all latest logistics. If you can't find the answers you need, please email Race Directors, Nik Ponzio and Heather Feldman at: cim@gmaa.run
NOTE: GMAA/Insurance rules prohibit running with a baby jogger or dog. For safety reasons and as a courtesy to fellow runners, GMAA strongly discourages the use of headphones.
There are no refunds, deferrals, or transfers.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
57°
Typical Low
41°
Chance of Rain
36%
Based on US Climate Normals data from S Hero, 1 mi from the venue.
Host City
City Elevation
99 ft
Nearest Airport
PBG
Plattsburgh International Airport · 8 mi
Major Hub
ALB
Albany International Airport · 133 mi
Time Zone
Eastern Time
From Endurance Grid
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From Endurance Grid
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Coming Up
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10 miles away
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9 miles away
Island Vines 10K & 5K
1 mile away
Plan your trip
Coming from out of town? There's more to South Hero than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to South HeroFrequently Asked Questions (FAQs)
Champlain Islands Marathon & Half Marathon
Oct 18, 2026