
From the Organizer
The Triathlon begins in the Town of Oyster Bay and takes you through surrounding towns. It begins with a 1/2 mile swim in calm Oyster Bay Harbor. Next, you will bike a one loop 12.3K, over hill and dale, thru beautiful Oyster Bay and Oyster Bay Cove. Fairly hilly but downhill and flat to the finish. Lastly, you will run a 5K thru Mill Neck and Brookville, "Up" to the Planting Fields Arboretum and back "Down" to Roosevelt Park. Town of Oyster Bay residents receive a $5 discount. Use code TOB5 at checkout.
Shirts and a custom finisher medal for all participants!
You are not guaranteed swag if you register after August 18th.
The Junior Triathlon takes place on Saturday. This year the race offers two different distances for our youth participants! Swim in Oyster Bay Harbor and bike and run through Roosevelt Park.
Distances & Pricing
Race Location
About This Sport
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.
Three sports, one race — swim, bike, run in sequence, with transitions that are a discipline of their own.
Open water, open roads, and competition with yourself. Cross the finish line knowing what it took to get there.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think.
Coming Up
Frequently Asked Questions (FAQs)
Runner's Edge - TOBAY Triathlon & Junior Triathlon
Aug 22, 2026