Trimaran racing involves sailing competitions using a type of boat called a trimaran, which has three hulls. This design provides greater stability and speed compared to traditional monohull boats. The two outer hulls help to reduce drag and allow for faster sailing, making trimarans popular in various racing events. Racers often participate in events like the Route du Rhum or the Transpacific Yacht Race, showcasing their skills and the capabilities of their vessels. The combination of advanced technology and aerodynamic design in trimarans has led to impressive records and thrilling races on the water.