Head to Head
| Europe Friendlies | 2023/08/05 17:00 | Sestao River v Real Unión | W | 0-1 |
| Spain Segunda B Group 2 | 2017/04/14 15:30 | Sestao River v Real Unión | W | 0-2 |
| Spain Segunda B Group 2 | 2016/11/19 17:00 | Real Unión v Sestao River | W | 1-0 |
| Spain Segunda B Group 2 | 2016/03/06 16:00 | Real Unión v Sestao River | D | 2-2 |
| Spain Segunda B Group 2 | 2015/10/18 15:30 | Sestao River v Real Unión | L | 1-0 |
| Spain Segunda B Group 2 | 2015/01/18 16:30 | Sestao River v Real Unión | D | 2-2 |
| Spain Segunda B Group 2 | 2014/08/30 14:00 | Real Unión v Sestao River | D | 2-2 |
Home History
| Spain Primera Division RFEF Group 1 | 2023/12/17 11:00 | Real Sociedad B v Real Unión | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2023/12/10 11:00 | Real Unión v Osasuna B | L | 2-3 |
| Spain Primera Division RFEF Group 1 | 2023/12/02 19:00 | Cultural Leonesa v Real Unión | L | 2-0 |
| Spain Primera Division RFEF Group 1 | 2023/11/26 11:00 | Real Unión v SD Logrones | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2023/11/18 17:00 | Real Unión v Gimnastic | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2023/11/11 16:00 | UE Cornella v Real Unión | L | 3-1 |
| Spain Primera Division RFEF Group 1 | 2023/11/05 15:00 | Real Unión v Deportivo La Coruna | W | 3-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/29 11:00 | Lugo v Real Unión | L | 2-0 |
Away History
| Spain Primera Division RFEF Group 1 | 2023/12/16 19:00 | Sestao River v Osasuna B | W | 2-1 |
| Spain Primera Division RFEF Group 1 | 2023/12/10 15:00 | Deportivo La Coruna v Sestao River | D | 1-1 |
| Spain Copa del Rey | 2023/12/07 20:00 | Sestao River v Celta Vigo | L | 1-2 |
| Spain Primera Division RFEF Group 1 | 2023/12/02 15:00 | Sestao River v Lugo | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2023/11/26 15:00 | Rayo Majadahonda v Sestao River | W | 0-2 |
| Spain Primera Division RFEF Group 1 | 2023/11/19 19:00 | Sestao River v Fuenlabrada | L | 1-2 |
| Spain Primera Division RFEF Group 1 | 2023/11/12 19:00 | Gimnastic v Sestao River | D | 0-0 |
| Spain Copa del Rey | 2023/11/08 17:00 | Gimnastica Segoviana v Sestao River | D | 3-3 |