| Primera RFEF Grupo 1 | Matches | W | D | L |  |
 |
 |
| home | 4 | 2 | 1 | 1 | 8 | 1 | - |
| away | 2 | 1 | - | 1 | 6 | - | - |
| overall | 6 | 3 | 1 | 2 | 14 | 1 | - |
| Primera RFEF Grupo 2 | Matches | W | D | L | |
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| home | 1 | - | 1 | - | 5 | - | - |
| away | - | - | - | - | - | - | - |
| overall | 1 | - | 1 | - | 5 | - | - |
| Segunda B Grupo 2 | Matches | W | D | L | |
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| home | 2 | 1 | 1 | - | 3 | - | - |
| away | 3 | 1 | 1 | 1 | 7 | 1 | - |
| overall | 5 | 2 | 2 | 1 | 10 | 1 | - |
| Primera RFEF Grupo 1 | Home | - | Guest | |
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Results |
| 31/10/21 | Real Unión | - | Racing Santander | 3 | - | - | 1:2 |
| 26/01/22 | RC Celta B | - | Real Unión | 4 | - | - | 1:2 |
| 03/02/24 | Real Unión | - | CD Lugo | - | - | - | 0:0 |
| 18/05/24 | Real Unión | - | CF Fuenlabrada | 3 | 1 | - | 2:1 |
| 28/09/24 | Real Unión | - | Sestao River | 2 | - | - | 2:1 |
| 16/03/25 | Ourense CF | - | Real Unión | 2 | - | - | 1:0 |
| Primera RFEF Grupo 2 | Home | - | Guest | |
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Results |
| 06/11/22 | Real Unión | - | SD Logroñés | 5 | - | - | 1:1 |
| Segunda B Grupo 2 | Home | - | Guest | |
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Results |
| 04/05/14 | Real Unión | - | CF Fuenlabrada | 3 | - | - | 2:0 |
| 30/08/14 | Real Unión | - | Sestao River | - | - | - | 2:2 |
| 28/03/15 | Barakaldo CF | - | Real Unión | 3 | - | - | 0:3 |
| 14/04/18 | Arenas de Getxo | - | Real Unión | 2 | - | - | 1:1 |
| 07/04/19 | Barakaldo CF | - | Real Unión | 2 | 1 | - | 3:1 |
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