Big Week 2017 - Castro-Urdiales from June 23 to July 2. Past days. Friday, June 23 Saturday, June 24 Sunday, June 25 Monday, June 26 Tuesday, June 27 Wednesday, June 28 Thursday, June 29 Friday, June 30 Saturday, July 1 Sunday, July 2 You might be also interested in: Saint John 2017 - Muskiz (Biscay) - 15 Kms. Saint John 2017 - Lejona (Biscay) - 29 Kms. Fiesta of Aiega 2017 - Aiega (Biscay) - 24 Kms. Saint John 2017 - Ugarte (Biscay) - 28 Kms. Saint Peter 2017 - Sopelana (Biscay) - 29 Kms.