Ballarat Masters Regatta rounds out the rowing season on Lake Wendouree on Saturday.
The regatta has attracted 280 rowers, who will fill 672 seats across 41 1000-metre events.
Racing begins at 9am.
Ballarat City and Wendouree Ballarat will be among 26 clubs taking part.
Ballarat City has one of the bigger representations with eight boats, including single, double and quad sculls, pairs, fours and an eight.