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34,045EventsUnited States2026
Next week
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Thousand Islands Half Marathon, 10K & 5K
Saturday, May 16, 2026 · Wellesley Island, United States
Distances
10K
Half
Start location
About this race
Thousand Islands Half Marathon, 10K & 5K: Friday evening 5K at Thousand Islands Winery. Saturday 10K and Half Marathon on Wellesley Island, starting and finishing at the Lake Course Executive Club House, with post-race festivities and awards. Options: Island Double (5K & 10K) or Island Super Double (5K & 13.1M). Courses feature famous Thousand Islands and Thousand Islands bridge views. Proceeds benefit Alexandria Bay and the ACS Booster Club.