Head to Head
| Spain Primera Division RFEF Group 1 | 2025/02/02 11:00 | Barakaldo v Real Unión | L | 0-2 |
| Spain Primera Division RFEF Group 1 | 2024/10/13 13:30 | Real Unión v Barakaldo | D | 1-1 |
| Europe Friendlies | 2024/08/14 17:00 | Real Unión v Barakaldo | W | 0-1 |
| Spain Segunda B Group 2 | 2021/02/13 17:00 | Barakaldo v Real Unión | W | 3-0 |
| Spain Segunda B Group 2 | 2020/11/15 16:00 | Real Unión v Barakaldo | L | 2-1 |
| Spain Segunda B Group 2 | 2019/12/08 16:00 | Barakaldo v Real Unión | W | 2-1 |
| Spain Segunda B Group 2 | 2019/04/07 15:00 | Barakaldo v Real Unión | W | 3-1 |
| Spain Segunda B Group 2 | 2018/11/17 15:00 | Real Unión v Barakaldo | W | 1-2 |
Home History
| Europe Friendlies | 2025/07/30 17:00 | Barakaldo v Osasuna B | L | 1-2 |
| Europe Friendlies | 2025/07/26 17:00 | Burgos v Barakaldo | L | 2-0 |
| Spain Primera Division RFEF Group 1 | 2025/05/24 17:00 | SD Tarazona v Barakaldo | L | 1-0 |
| Spain Primera Division RFEF Group 1 | 2025/05/17 17:00 | Barakaldo v Barcelona B | L | 1-2 |
| Spain Primera Division RFEF Group 1 | 2025/05/10 18:00 | Cultural Leonesa v Barakaldo | L | 2-1 |
| Spain Primera Division RFEF Group 1 | 2025/05/03 18:00 | Barakaldo v Amorebieta | W | 2-0 |
| Spain Primera Division RFEF Group 1 | 2025/04/27 10:00 | Gimnastica Segoviana v Barakaldo | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2025/04/19 16:00 | Barakaldo v Sestao River | L | 2-3 |
Away History
| Spain Primera Division RFEF Group 1 | 2025/05/24 17:00 | Athletic Bilbao B v Real Unión | L | 4-2 |
| Spain Primera Division RFEF Group 1 | 2025/05/17 17:00 | Real Unión v Osasuna B | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2025/05/11 10:00 | Zamora CF v Real Unión | L | 1-0 |
| Spain Primera Division RFEF Group 1 | 2025/05/03 16:00 | Real Unión v SD Tarazona | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2025/04/27 15:00 | Gimnastic v Real Unión | L | 4-1 |
| Spain Primera Division RFEF Group 1 | 2025/04/20 18:00 | Real Unión v Barcelona B | L | 1-3 |
| Spain Primera Division RFEF Group 1 | 2025/04/13 10:00 | Real Unión v Lugo | W | 3-0 |
| Spain Primera Division RFEF Group 1 | 2025/04/06 10:00 | Ponferradina v Real Unión | L | 3-1 |