Daletas was awarded $15,190, or $7 for each pound of his winning gourd. He said growing giant vegetables combines his love of gardening with his competitive streak.
"Why not grow something you can grow really big?" he told The Oregonian.
The prize-winning pumpkin will be on display during the upcoming weekend's Half Moon Bay Art and Pumpkin Festival.
"If you think you have a chance to win, you've got to come down," Daletas, a three-time winner of the competition, told the Half Moon Bay Review. "There's something about the feel that this town has. We don't have that up where we are."