
About the event
Scheduled for May 17, 2025, the Thousand Islands Half Marathon offers participants a scenic and moderately challenging course with an elevation gain of about 143 meters. Starting and finishing at the Lake Course Executive Country Club on Wellesley Island, the route takes runners under the iconic Thousand Islands Bridge and along the St. Lawrence Seaway, showcasing the natural beauty of the area. Organized by Willow Running, the event ensures a well-supported experience with aid stations, post-race festivities, and awards ceremonies. This half marathon is part of the Get Fit Half Marathon Series, attracting both local and visiting runners.
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Take your running to the next level
The Thousand Islands Half Marathon is a 21.1-kilometer (13.1 miles) race featuring an elevation gain of approximately 143 meters. The course takes runners under the Thousand Islands Bridge and along the St. Lawrence Seaway, providing picturesque views throughout the route.
If you are an official race organiser with any questions about this page, please get in touch: races@runna.com
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