The Full Distance Triathlon Maryland features a challenging course. Swim: The 2.4-mile swim takes place in the Choptank River's brackish tidal waters with a slight current on the outbound leg and inbound leg. Swimmers should be cautious of the current and use swim safety support as needed. The swim ends at the historic Long Wharf with a view of the Chesapeake Bay Lighthouse. Average water temperature: 72°F (22°C). Bike: The 112-mile bike course includes two laps through rural Dorchester ...