New England’s most beginner-friendly multisport event! A sprint triathlon and duathlon (and splash & dash) offering bike & run courses closed to traffic, spectacular water views and a fabulous finish in historic Fort Taber Park.

PLEASE NOTE: The Whaling City Tri & Du has been acquired by Outsider Endurance and will be produced by Outsider Endurance in 2023 and beyond with support from Sun Multisport Events to ensure a smooth and successful transition. CLICK HERE for details on the 2023 Whaling City Tri & Du and a link to register. The announcement of this change in ownership can be read here.