Saint Isidore Fair 2019 - Castalla from May 17 to May 19. Past days. Friday, May 17 Saturday, May 18 Sunday, May 19 You might be also interested in: Saint Isidore 2019 - Yecla (Murcia) - 50 Kms. Fiesta of San Isidro 2019 - Almansa (Albacete) - 58 Kms. Pilgrimage of Saint Isidore 2019 - Rojales - 59 Kms. FiraCalp 2019 - Calpe - 82 Kms.