There are numerous events, festivals and religious holidays.

San Bruno

On 18 July Segni celebrates its patron saint.  It's a period full of events involving the entire community, the most interesting event is the "Palio of San Bruno" which is an equestrian competition that tests speed and dexterity. The fireworks on the Pianillo mountain mark the end of the festival and are an unmissable event that fill the air with a celebratory atmosphere.

S. Lucia

The feast of St. Lucia held December 13 is a particularly intense example of popular religion; a Fair is put on for the occasion that has historically welcomed visitors from all around the area.

Feast of the Segni Chestnut

2010 marked the fifty third edition of the feast of the Segni Chestnut which is held on the fourth Sunday of October: enriched in recent decades because besides the delicious food tasting, cultural events and performances which are undoubtedly of great artistic value, it is an event that attracts thousands of tourists and holiday makers from Lazio and outside.

Giostra del Maialetto (Jousting the Pig)

The origins of this curious event (later celebrated with the establishment of a fancy dress event) go back to the early '600 when the counts Sforza, Duke of Segni, clashed with the people over the tax imposed on "grazing" pigs in the woods.
At the event, a pig with a bell around his neck was left free in the ancient Roman cistern in the archaeological area of ​​the Acropolis. Five teams, one for each area of the town, composed of two men each, battle to "hunt" the lively pig. All participants were blindfolded, and wore bells on their legs to fool each other with the noise while brandishing harmless sorghum brooms in order to hit the animal. The team with the highest number of landed shots scored. But the real fun for the audience was in watching the players blindly hit each other.

The event was ended in 1992 due to protests by animal rights activists it was then brought back recently but with a man dressed up playing the part of the pig.