Spain: Tier 3B - 2020-21
| Athletic Bilbao B beat Calahorra 2-1 (H) on 7 Apr 2021 |
| Calahorra beat Haro Deportivo 1-0 (A) on 18 Oct 2020 |
| Haro Deportivo beat Mutilvera 1-0 (H) on 7 Mar 2021 |
| Mutilvera beat Tudelano 3-1 (A) on 29 Nov 2020 |
| Tudelano beat Tarazona 3-0 (H) on 31 Jan 2021 |
| Tarazona beat Ebro 2-0 (H) on 6 Dec 2020 |
| Ebro beat Izarra 2-1 (H) on 31 Mar 2021 |
| Izarra beat SD Logroñés 1-0 (A) on 30 Jan 2021 |
| SD Logroñés beat Ejea 1-0 (H) on 21 Feb 2021 |
| Ejea beat Osasuna B 1-0 (H) on 3 Feb 2021 |
| Osasuna B beat Arenas Getxo 3-1 (A) on 7 Apr 2021 |
| Arenas Getxo beat Leioa 1-0 (H) on 25 Nov 2020 |
| Leioa beat Racing Santander 1-0 (H) on 2 Dec 2020 |
| Racing Santander beat Amorebieta 2-1 (A) on 2 Apr 2021 |
| Amorebieta beat Club Portugalete 2-1 (H) on 23 Jan 2021 |
| Club Portugalete beat Laredo 1-0 (A) on 28 Feb 2021 |
| Laredo beat Alavés B 2-1 (H) on 13 Mar 2021 |
| Alavés B beat Real Unión 2-1 (A) on 18 Nov 2020 |
| Real Unión beat Real Sociedad B 1-0 (A) on 22 Nov 2020 |
| Real Sociedad B beat Barakaldo 4-1 (A) on 8 Nov 2020 |
| Barakaldo beat Athletic Bilbao B 3-1 (H) on 14 Mar 2021 |
HWC: Thick arrows show the earliest chain of wins that passes through every team and returns to its start.