Head to Head
| Spain Segunda B Group 2 | 2019/03/09 17:00 | Arenas Club de Getxo v Real Unión | L | 1-0 |
| Spain Segunda B Group 2 | 2018/10/21 15:00 | Real Unión v Arenas Club de Getxo | D | 1-1 |
| Spain Segunda B Group 2 | 2018/04/14 16:00 | Arenas Club de Getxo v Real Unión | D | 1-1 |
| Spain Segunda B Group 2 | 2017/11/19 16:00 | Real Unión v Arenas Club de Getxo | D | 2-2 |
| Spain Segunda B Group 2 | 2017/04/23 15:00 | Real Unión v Arenas Club de Getxo | D | 0-0 |
| Spain Segunda B Group 1 | 2016/11/26 16:00 | Arenas Club de Getxo v Real Unión | D | 0-0 |
| Spain Segunda B Group 2 | 2016/03/12 15:00 | Arenas Club de Getxo v Real Unión | W | 1-3 |
| Spain Segunda B Group 2 | 2015/10/25 16:00 | Real Unión v Arenas Club de Getxo | W | 2-0 |
Home History
| Spain Segunda B Play-Offs | 2019/06/02 16:30 | Real Unión v Jumilla | W | 2-0 |
| Spain Segunda B Play-Offs | 2019/05/26 16:00 | Jumilla v Real Unión | D | 2-2 |
| Spain Segunda B Group 2 | 2019/05/19 16:00 | Real Unión v Tudelano | W | 1-0 |
| Spain Segunda B Group 2 | 2019/05/12 16:00 | Athletic Bilbao B v Real Unión | L | 2-0 |
| Spain Segunda B Group 2 | 2019/05/04 14:00 | Real Unión v CD Vitoria | W | 2-0 |
| Spain Segunda B Group 2 | 2019/04/28 10:00 | Real Unión v CD Calahorra | L | 0-1 |
| Spain Segunda B Group 2 | 2019/04/19 10:00 | Sporting Gijon B v Real Unión | W | 0-1 |
| Spain Segunda B Group 2 | 2019/04/13 17:00 | Real Unión v UP Langreo | W | 4-0 |
Away History
| Spain Segunda B Group 2 | 2019/05/19 16:00 | Arenas Club de Getxo v Mirandes | W | 1-0 |
| Spain Segunda B Group 2 | 2019/05/12 16:00 | Real Sociedad B v Arenas Club de Getxo | D | 1-1 |
| Spain Segunda B Group 2 | 2019/05/04 16:00 | Arenas Club de Getxo v UD Logrones | L | 1-3 |
| Spain Segunda B Group 2 | 2019/04/28 10:00 | Real Oviedo B v Arenas Club de Getxo | L | 3-2 |
| Spain Segunda B Group 2 | 2019/04/17 17:30 | Arenas Club de Getxo v Gernika | W | 4-1 |
| Spain Segunda B Group 2 | 2019/04/13 15:00 | Leioa v Arenas Club de Getxo | D | 0-0 |
| Spain Segunda B Group 2 | 2019/04/06 16:00 | Arenas Club de Getxo v Amorebieta | D | 1-1 |
| Spain Segunda B Group 2 | 2019/03/31 15:00 | Gimnastica de Torrelavega v Arenas Club de Getxo | D | 1-1 |