The Shamrock Shuffle takes place at Cape Henlopen State Park's Main Beach, and is organized by the Seashore Striders, featuring multiple race options and a 2-person relay. Participants can register online or by mail, with proceeds supporting local charities. The event includes timing with the Chronotrack chip system, long-sleeve shirts, and custom awards for top finishers across different age and team categories. The course is open to the public, and safety considerations are prioritized for all participants.