| Isernia to Arcozelo | 1,184.19 mi (1,905.77 km) |
| Isernia to Arganil | 1,164.76 mi (1,874.50 km) |
| Isernia to Arouca | 1,165.29 mi (1,875.36 km) |
| Isernia to Arruda dos Vinhos | 1,237.66 mi (1,991.82 km) |
| Isernia to Aveiro | 1,189.84 mi (1,914.86 km) |
| Isernia to Aver-o-Mar | 1,187.12 mi (1,910.49 km) |
| Isernia to Aves | 1,162.72 mi (1,871.21 km) |
| Isernia to Azambuja | 1,225.76 mi (1,972.67 km) |
| Isernia to Baiao | 1,151.81 mi (1,853.66 km) |
| Isernia to Barcelos | 1,178.22 mi (1,896.15 km) |
| Isernia to Barreiro | 1,243.81 mi (2,001.72 km) |
| Isernia to Batalha | 1,212.06 mi (1,950.63 km) |
| Isernia to Beja | 1,196.15 mi (1,925.02 km) |
| Isernia to Belas | 1,252.24 mi (2,015.29 km) |
| Isernia to Benavente | 1,224.19 mi (1,970.15 km) |
