The Guava Fair in Calvillo is one of the four most important festivals in the municipality and is held during the first days of December. It is a great attraction and is full of tradition, since it offers a colorful popular festival, in addition to the typical grape harvest in which there is obviously an abundance of guava-based products. Cultural and sporting events, mechanical games, cockfights, bullfights, and other events are also held in the area. At the Guava Fair you can enjoy the Queen of the Fair Contest and there are also charro tournaments, rodeo, skirmishes, fair dances, handicraft, commercial and gastronomic expo.