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.
Aug 22, 2026
Distance — JUNIOR Triathlon - Long Course: Swim: 200 Yards Bike: 2.5 Miles Run: 1 Mile
Type — —
09:00
$45.00
Aug 22, 2026
Distance — JUNIOR Triathlon - Short Course: Swim: 100 Yards Bike: 2.5 Miles Run: 1 Mile
Type — —
09:00
$45.00
Aug 23, 2026
Distance — AquaBike
Type — —
07:00
$105.00
Aug 23, 2026
Distance — BikeRun
Type — —
07:00
$105.00
Aug 23, 2026
Distance — Individual Triathlon
Type — —
07:00
$110.00
Aug 23, 2026
Distance — Relay Team - 2 or 3 members
Type — —
07:00
$155.00
These values represent the 3-year monthly averages for August in Oyster Bay.
Oyster Bay is one of three towns in Nassau County, on Long Island, New York.
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