*CD Calahorra 3-3 Atlético Levante
| 27.05.2018 | Atlético Levante | 1-2/p.3-5 | CD Calahorra | |
| 20.05.2018 | CD Calahorra | 1-2 | Atlético Levante | |
*Atlético Malagueño 1-1 Yeclano Deportivo
| 27.05.2018 | Yeclano Deportivo | 1-1 | Atlético Malagueño | |
| 20.05.2018 | Atlético Malagueño | 0-0 | Yeclano Deportivo | |
Cádiz CF B 0-1 CD Teruel *
| 27.05.2018 | CD Teruel | 0-0 | Cádiz CF B | |
| 20.05.2018 | Cádiz CF B | 0-1 | CD Teruel | |
*Gimn. Torrelavega 6-3 RCD Mallorca B
| 27.05.2018 | RCD Mallorca B | 2-2 | Gimn. Torrelavega | |
| 20.05.2018 | Gimn. Torrelavega | 4-1 | RCD Mallorca B | |
*Inter de Madrid 1-1 CD Tenerife B
| 27.05.2018 | CD Tenerife B | 1-1 | Inter de Madrid | |
| 19.05.2018 | Inter de Madrid | 0-0 | CD Tenerife B | |
SD Compostela 2-4 RCD Espanyol B *
| 27.05.2018 | RCD Espanyol B | 4-2 | SD Compostela | |
| 20.05.2018 | SD Compostela | 0-0 | RCD Espanyol B | |
SCD Durango 1-1 UB Conquense *
| 27.05.2018 | UB Conquense | 0-0 | SCD Durango | |
| 19.05.2018 | SCD Durango | 1-1 | UB Conquense | |
UD Mutilvera 1-5 Real Oviedo B *
| 27.05.2018 | Real Oviedo B | 3-1 | UD Mutilvera | |
| 19.05.2018 | UD Mutilvera | 0-2 | Real Oviedo B | |
Unionistas Salamanca 0-1 CD Don Benito *
| 27.05.2018 | CD Don Benito | 1-0 | Unionistas Salamanca | |
| 19.05.2018 | Unionistas Salamanca | 0-0 | CD Don Benito | |