Fiesta of Las Arenas 2019 from September 20 to September 22. Past days. Friday, September 20 Saturday, September 21 Sunday, September 22 You might be also interested in: Holy Cross 2019 - Galdacano - 23 Kms. Fiesta of Larrauri 2019 - Larrauri - 25 Kms. Fiesta of Legarre 2019 - Legarre (Gipuzkoa) - 65 Kms. Fiesta of Zaramaga 2019 - Zaramaga (Alava) - 68 Kms.