| Club | Stadium | City | Capacity |
|---|---|---|---|
| Leganes | Butarque Stadiumopened 1998 | Leganés195,734 people | 11,454 |
| Tudelano | Estadio Ciudad de Tudelaopened 1969 | Tudela38,903 people | 10,000 |
| Huesca | Estadio El Alcorazopened 1972 | Huesca55,454 people | 9,000 |
| Barakaldo | Estadio de Lasesarreopened 2003 | Barakaldo102,986 people | 7,960 |
| Conquense | Estadio La Fuensantaopened 1940 | Cuenca53,600 people | 6,700 |
| Real Unión | Stadium Galopened 1926 | Irun63,835 people | 6,344 |
| Toledo | Estadio Salto del Caballoopened 1973 | Toledo87,216 people | 5,300 |
| Sestao River | Las Llanas Stadiumopened 1923 | Sestao28,512 people | 4,367 |
| Atlético Madrileño | Estadio Cerro del Espinoopened 1995 | Madrid3,223,334 people | 3,376 |
| Athletic Bilbao B | Lezama Facilities | Bilbao351,124 people | 3,250 |
| Laudio | Estadio Ellakuri | Laudio/Llodio18,077 people | 2,550 |
| Capacity not recorded yet | |||
| Amorebieta | – | ||
| Fuenlabrada | – | ||
| Getafe B | – | ||
| Las Palmas II | – | ||
| Peña Sport | Tafalla10,854 people | – | |
| Puerta Bonita | – | ||
| Real Madrid C | Real Madrid Cityopened 2005 | Madrid3,223,334 people | – |
| Real Sociedad B | Zubieta Facilities | San Sebastián189,866 people | – |
| Sariñena | – | ||
Sources: Wikipedia (CC BY-SA 4.0), API-Football · Data sources