The Maadi Cup is the prize for the New Zealand Secondary Schools Boys' Under 18 Rowing Eights. More colloquially, it is the name given to the New Zealand Secondary Schools Rowing Regatta, at which the Maadi Cup is raced. The regatta is the largest school sports event in the Southern Hemisphere, with over 2,450 rowers from 123 secondary schools participating in 2021.[1] The regatta is held annually in late March, alternating between the country's two main rowing venues: Lake Karapiro near Cambridge (odd years), and Lake Ruataniwha near Twizel (even years).