Fiesta of Udondo 2019 from September 10 to September 14. Past days. Tuesday, September 10 Friday, September 13 Saturday, September 14 You might be also interested in: Fiesta of Urduliz 2019 - Urduliz - 7 Kms. September Fiesta 2019 - Sondica - 8 Kms. Holy Cross 2019 - Galdacano - 20 Kms. Fiesta of Ampuero 2019 - Ampuero (Cantabria) - 50 Kms. Fiesta of Sansomendi 2019 - Sansomendi (Alava) - 65 Kms.