Get ready for an unforgettable weekend at the Thousand Islands Half Marathon, 10K & 5K, hosted by Willow Running from May 15-16, 2026, in the stunning setting of Wellesley Island, Jefferson. This exciting event invites runners of all levels to experience the breathtaking views of the Thousand Islands and the iconic Thousand Islands bridge. Kick off the festivities on Friday evening with a scenic 5K at the charming Thousand Islands Winery in Alexandria Bay. Then, on Saturday, lace up your running shoes for the 10K and Half Marathon, featuring a picturesque course that promises both challenge and beauty.

For those seeking an extra thrill, consider tackling the Island Double (5K & 10K) or the Island Super Double (5K & 13.1M). The event will once again take place at the Lake Course Executive Club House, ensuring a fantastic start and finish for runners. With post-race festivities, awards, and the best swag around, this is an event not to be missed! Join us in celebrating health, community, and the stunning backdrop of Alexandria Bay, all while supporting the local ACS Booster Club. Mark your calendars and prepare for an exhilarating racing experience!