The patron saint of Altopascio is Saint James, celebrated on 25 July in the Church of Santi Jacopo, Cristoforo ed Eligio.
The tradition has been handed down to the present day, and during the festivities for the feast of Saint James, at the end of July, a historical procession, crossbow shooting and the re-enactment of a medieval village's activities are held. The town, a historic stop of the ancient hospital on the Via Francigena, hosts the Francigena International Arts Festival every summer, an internationally significant classical music event. The town also holds the Badia di San Pietro and Lake Sibolla.
