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Thousand Islands Half Marathon, 10K & 5K

Date
May 15, 2026
Distance
Thousand Islands Half Marathon (No shirt/No medal) · Thousand Islands Half Marathon · Thousand Islands 10K & more

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!

 

 

Distances & Pricing

Thousand Islands Half Marathon (No shirt/No medal)8 AMRegister →
Thousand Islands Half Marathon8 AMRegister →
Thousand Islands 10K8:30 AMRegister →
Thousand Islands 5K (No shirt/No medal)5 PMRegister →
Thousand Islands 5K5 PMRegister →
Island Super Double (5K & 13.1)5 PMRegister →
Island Double (5K & 10K)5 PMRegister →
Thousand Islands Half Marathon (Virtual)8 AMRegister →
Thousand Islands 10K (Virtual)8:30 AMRegister →
Thousand Islands 5K (Virtual)5 PMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.

Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.

The half marathon rewards people who show up for the boring training miles.

How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the Thousand Islands Half Marathon, 10K & 5K?
Thousand Islands Half Marathon, 10K & 5K is a running event held in Wellesley Island, NY. Learn more about the different endurance sports here.
When and where is the Thousand Islands Half Marathon, 10K & 5K?
Friday, May 15, 2026 in Wellesley Island, NY at 21496 Club House Dr., Wellesley Island, NY. Check the official event page for exact start times and wave schedules.
How do I register for the Thousand Islands Half Marathon, 10K & 5K?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

Thousand Islands Half Marathon, 10K & 5K

May 15, 2026

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