What are the racing events of rowed or sailed watercraft called?

Regatta Day in St. John's Newfoundland is a civic holiday the first Monday in August. The rowing races are on Lake Quidi Vidi. Men's 2450m and women's 1235m. This is one of the oldest competitions in North America since even before records of 1860.

I live in the famous Essequibo river every year we have regret.

i use cross instead of marathon the answer bruh :]