The event attracts some 2000 plus secondary school students from over 120 schools to compete with over 8,000 spectators.
The Aon Maadi Cup regatta is the National Championships for secondary school rowing in New Zealand. The regatta is a New Zealand Secondary School Rowing Association (NZSSRA) and Rowing NZ event and it is New Zealand's largest rowing regatta. It is hosted by Karapiro Rowing Inc and South Island Rowing on alternative years.