The patron of Carnago is Saint Martin, celebrated on 11 September in the Church of San Martino.
Every year, on the second Sunday of September, the Festa del Paese is held, on the occasion of the religious celebrations for the Madonna dei Miracoli. The preceding Saturday sees the Palio dei Rioni, an event that draws a large audience: the town's districts compete against each other, with the winner awarded a plaque to be placed on their banner. The town also holds the Church of Santa Maria and the Church of San Bartolomeo Apostolo.