SWIM: 1/4 Mile
The Marsh Madness Triathlon ocean swim course is an inverted V shape. You can expect water temperatures in the low-60s. Wetsuits are mandatory. Lifeguards and kayakers will keep you safe and on course.
BIKE: 11 Miles
The Marsh Madness Triathlon features a one loop 12.5 mile course. The course is almost entirely flat and fast. Athletes will exit transition and head south on Gurnet Road, left on Careswell Street (RT 139), follow into Duxbury where Careswell Street makes a sharp right turn, right on Enterprise Street (RT 3A North), right on Parsonage, right on Ocean Street (RT 139), right on Plymouth Avenue, right on Dyke Road (RT 139), left on Beach Street, left on Bay Avenue, right Bay Street, left on Gurnet Road and back to Transition. The bike course is open to vehicular traffic. Traffic is expected to be Sunday morning light. All major intersections and turns will be staffed by police and/or volunteers.
Helmets are mandatory!
RUN: 3 Miles
The Marsh Madness Triathlon features a 3-mile out-and-back beach run on hard packed sand at low tide. One Aid station services you both at Mile 1 and Mile 2. The Aid Station will be serving water only.