StadiumStadion Castro Urdiales
| Current capacity of the stadium |
| Standing | 17 500 |
| Seats | 10 900 |
| Tribune | 6 500 |
| Seats for sponsors | 200 |
| Fans attended |
| 4. 6. 2025 | Castro Urdiales-Atlético Madrid | 3 477 |
| 2. 6. 2025 | Castro Urdiales-Tenerife | 3 366 |
| 29. 5. 2025 | Castro Urdiales-El Mojan | 3 362 |
| 24. 5. 2025 | Castro Urdiales-Almunecar | 3 389 |