| RB Linense beat Lorca Deportiva 2-0 (A) on 3 Sep 2017 |
| Lorca Deportiva beat Mérida 2-0 (A) on 22 Oct 2017 |
| Mérida beat Badajoz 3-0 (H) on 8 Oct 2017 |
| Badajoz beat Córdoba B 3-0 (H) on 15 Oct 2017 |
| Córdoba B beat Las Palmas B 1-0 (A) on 16 Sep 2017 |
| Las Palmas B beat Villanovense 2-1 (H) on 3 Sep 2017 |
| Villanovense beat Real Betis B 1-0 (H) on 8 Oct 2017 |
| Real Betis B beat UCAM Murcia 1-0 (H) on 1 Oct 2017 |
| UCAM Murcia beat Recreativo Granada 1-0 (A) on 21 Aug 2017 |
| Recreativo Granada beat Marbella 1-0 (H) on 16 Sep 2017 |
| Marbella beat Cartagena 1-0 (H) on 8 Oct 2017 |
| Cartagena beat Recreativo Huelva 3-2 (H) on 19 Aug 2017 |
| Recreativo Huelva beat Extremadura 2-1 (H) on 8 Oct 2017 |
| Extremadura beat San Fernando 1-0 (H) on 17 Sep 2017 |
| San Fernando beat Real Murcia 3-2 (H) on 22 Oct 2017 |
| Real Murcia beat El Ejido 4-1 (H) on 3 Sep 2017 |
| El Ejido beat Écija Balompié 1-0 (H) on 8 Oct 2017 |
| Écija Balompié beat Melilla 2-1 (H) on 15 Oct 2017 |
| Melilla beat Jumilla 1-0 (H) on 27 Aug 2017 |
FLP: Thick arrows show the earliest chain of wins that passes through every team.