Fiestas de San Tiburcio de Leitza Activity · Leitza, Larraun-Leitzaldea, Navarra Image of Leitza, not of the place itself. The patron saint festival of San Tiburcio is celebrated from 10 to 15 August; Leitza also celebrates its carnival in January, around the fourth Sunday of the month, and the bonfire of San Juan on the night of 23 June. 10-15 de agosto Photo: Quahadi (CC BY-SA 4.0) What to see and do in Leitza