Festa di San Zenone

The 2025 edition of the Festa di San Zenone confirmed the tradition of Castano Primo. On the fourth Sunday of October, the two central elements of the festival were renewed: the solemn Mass in the collegiate church, with the "brusà il balon" rite — the burning of a large votive balloon symbolizing the flame of faith — and the historic fair, with stalls filling the town center.

An event that, even in 2025, drew visitors from all over the Alto Milanese, intertwining the religious dimension of the occasion with the centuries-old commercial tradition linked to the 18th-century fair.