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Thousand Islands Half Marathon, 10K & 5K logo

Thousand Islands Half Marathon, 10K & 5K

Fri, May 15, 2026, 5:00 PM EDT

Location
Wellesley Island, NY
21496 Club House Dr., 13640
Type
RUN
Official registration

Sign up and verify details on the organizer’s official page.

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Course feel, difficulty, and community fit are being added to this listing. Check back, and always confirm details on the official registration page.

Distances & registration

8 options

Registration for all distances is through the official signup link above.

  • 3.1 Miles

    Fri, May 15, 5:00 PM EDT · From $43.40

    Opens Oct 27, 2025, 9:42 AM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 3.1 Miles

    Fri, May 15, 5:00 PM EDT · From $43.40

    Opens Oct 27, 2025, 1:41 PM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 6.2 Miles

    Sat, May 16, 8:30 AM EDT · From $59.30

    Opens Oct 27, 2025, 9:50 AM EDT · Closes Dec 31, 2025, 6:59 PM EST

+ 5 more options
  • 6.2 Miles

    Sat, May 16, 8:30 AM EDT · From $64.60

    Opens Oct 27, 2025, 1:41 PM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 15K

    Fri, May 15, 5:00 PM EDT · From $80.50

    Opens Oct 27, 2025, 5:57 PM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 13.1 Miles

    Sat, May 16, 8:00 AM EDT · From $75.20

    Opens Oct 27, 2025, 8:58 AM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 13.1 Miles

    Sat, May 16, 8:00 AM EDT · From $75.20

    Opens Oct 27, 2025, 9:50 AM EDT · Closes Dec 31, 2025, 6:59 PM EST

  • 16.2 Miles

    Fri, May 15, 5:00 PM EDT · From $99.58

    Opens Oct 27, 2025, 5:57 PM EDT · Closes Dec 31, 2025, 6:59 PM EST

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The course

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From the organizer

Take in the famous views of the Thousand Islands and Thousand Islands bridge. Once again, we will be offering the 5K on Friday evening at the Thousand Islands Winery in Alexandria Bay.  On Saturday, we will offer the 10K and Half Marathon on Wellesley Island along with the post-race festivities and awards ceremony. If you are feeling ambitious, you are more than welcome to consider the Island Double (5K & 10K) or the Island Super Double (5K & 13.1M). This event is part The Get Fit Half Marathon Series .

For 2026 we are returning to the Lake Course Executive Club House (21496 Club House Dr.) for the start/finish for Saturdays Half Marathon & 10K similar to years 2020-2023 & 2025.

Great views, great courses...always best swag plus we get to help the great people of Alexandria Bay as well as the ACS Booster Club!

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