| Towcester to Arcos de Valdevez | 791.07 mi (1,273.11 km) |
| Towcester to Arcozelo | 845.88 mi (1,361.31 km) |
| Towcester to Arganil | 888.70 mi (1,430.23 km) |
| Towcester to Arouca | 845.94 mi (1,361.41 km) |
| Towcester to Arruda dos Vinhos | 987.36 mi (1,589.00 km) |
| Towcester to Aveiro | 873.07 mi (1,405.07 km) |
| Towcester to Aver-o-Mar | 826.39 mi (1,329.94 km) |
| Towcester to Aves | 814.57 mi (1,310.93 km) |
| Towcester to Azambuja | 978.23 mi (1,574.32 km) |
| Towcester to Baiao | 826.94 mi (1,330.83 km) |
| Towcester to Barcelos | 816.09 mi (1,313.37 km) |
| Towcester to Barreiro | 1,007.89 mi (1,622.04 km) |
| Towcester to Batalha | 939.23 mi (1,511.54 km) |
| Towcester to Beja | 1,029.26 mi (1,656.44 km) |
| Towcester to Belas | 1,004.68 mi (1,616.88 km) |
