Head to Head
| Spain Primera Division RFEF Group 1 | 2024/04/13 18:00 | Sestao River v Real Unión | L | 3-1 |
| Spain Primera Division RFEF Group 1 | 2024/01/03 18:00 | Real Unión v Sestao River | W | 4-2 |
| 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 |
Home History
| Spain Primera Division RFEF Group 1 | 2024/09/15 17:30 | Real Unión v Amorebieta | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/07 15:30 | Osasuna B v Real Unión | W | 1-2 |
| Spain Primera Division RFEF Group 1 | 2024/09/01 16:00 | Real Unión v Celta Fortuna | W | 3-2 |
| Spain Primera Division RFEF Group 1 | 2024/08/25 18:00 | Barcelona B v Real Unión | D | 1-1 |
| Europe Friendlies | 2024/08/14 17:00 | Real Unión v Barakaldo | L | 0-1 |
| Europe Friendlies | 2024/08/10 09:00 | UD Logrones v Real Unión | D | 2-2 |
| Europe Friendlies | 2024/07/31 17:00 | Real Unión v AC Ajaccio | D | 1-1 |
| Europe Friendlies | 2024/07/27 14:00 | Barrow v Real Unión | D | 2-2 |
Away History
| Spain Copa Federacion | 2024/09/25 17:30 | Sestao River v CD Calahorra | W | 4-3 |
| Spain Primera Division RFEF Group 1 | 2024/09/21 15:30 | Sestao River v FC Andorra | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/14 15:30 | Real Sociedad B v Sestao River | W | 0-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/08 17:00 | Sestao River v Lugo | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/01 16:00 | Gimnastic v Sestao River | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2024/08/25 16:00 | Sestao River v Unionistas de Salamanca CF | D | 1-1 |
| Europe Friendlies | 2024/07/31 16:30 | Real Aviles CF v Sestao River | W | 0-2 |
| Europe Friendlies | 2024/07/27 17:00 | Athletic Bilbao B v Sestao River | L | 1-0 |