| Swansea to Arcos de Valdevez | 4,140.09 mi (6,662.83 km) |
| Swansea to Arcozelo | 4,154.52 mi (6,686.05 km) |
| Swansea to Arganil | 4,208.32 mi (6,772.63 km) |
| Swansea to Arouca | 4,176.67 mi (6,721.70 km) |
| Swansea to Arruda dos Vinhos | 4,200.23 mi (6,759.61 km) |
| Swansea to Aveiro | 4,167.28 mi (6,706.60 km) |
| Swansea to Aver-o-Mar | 4,137.66 mi (6,658.91 km) |
| Swansea to Aves | 4,158.22 mi (6,692.01 km) |
| Swansea to Azambuja | 4,207.03 mi (6,770.57 km) |
| Swansea to Baiao | 4,179.13 mi (6,725.66 km) |
| Swansea to Barcelos | 4,141.20 mi (6,664.62 km) |
| Swansea to Barreiro | 4,210.45 mi (6,776.06 km) |
| Swansea to Batalha | 4,191.46 mi (6,745.50 km) |
| Swansea to Beja | 4,287.66 mi (6,900.32 km) |
| Swansea to Belas | 4,197.17 mi (6,754.70 km) |
