The Madison Regatta is an annual hydroplane boat racing event held in Madison, Indiana. It typically takes place over the Fourth of July weekend and features high-speed races on the Ohio River. The event attracts both professional and amateur racers, showcasing a variety of hydroplane classes. In addition to the races, the Madison Regatta includes various festivities, such as live music, food vendors, and family-friendly activities. The event draws thousands of spectators each year, making it a significant celebration for the local community and a highlight of the summer season in Indiana.