At the annual fiesta, 175 tonnes of ripe tomatoes are offloaded from seven trucks into the crowd packing the streets for an hour-long battle.
The tomato fight leaves the participants and the town's streets awash with red pulp. The town is hosed down minutes after the event ends at noon, while participants can use public showers.
The paid-entry event was inspired by a food fight between local children in 1945 in the tomato-producing region.