| Isernia to Alfena | 1,176.33 mi (1,893.11 km) |
| Isernia to Alijo | 1,121.99 mi (1,805.67 km) |
| Isernia to Aljustrel | 1,213.37 mi (1,952.73 km) |
| Isernia to Almada | 1,248.27 mi (2,008.90 km) |
| Isernia to Almargem | 1,250.83 mi (2,013.01 km) |
| Isernia to Almeirim | 1,210.40 mi (1,947.94 km) |
| Isernia to Amadora | 1,251.09 mi (2,013.44 km) |
| Isernia to Amarante | 1,152.48 mi (1,854.73 km) |
| Isernia to Amares | 1,162.77 mi (1,871.30 km) |
| Isernia to Amora | 1,247.31 mi (2,007.35 km) |
| Isernia to Anadia | 1,181.32 mi (1,901.15 km) |
| Isernia to Angra do Heroismo | 2,178.36 mi (3,505.73 km) |
| Isernia to Ansiao | 1,188.85 mi (1,913.26 km) |
| Isernia to Anta | 1,183.99 mi (1,905.45 km) |
| Isernia to Arcos de Valdevez | 1,165.16 mi (1,875.14 km) |
