| Isernia to Lagoa | 2,115.47 mi (3,404.52 km) |
| Isernia to Lagos | 1,258.88 mi (2,025.97 km) |
| Isernia to Lamego | 1,141.04 mi (1,836.33 km) |
| Isernia to Leiria | 1,210.43 mi (1,947.99 km) |
| Isernia to Lisbon | 1,246.95 mi (2,006.77 km) |
| Isernia to Loule | 1,223.19 mi (1,968.53 km) |
| Isernia to Loures | 1,245.69 mi (2,004.75 km) |
| Isernia to Lourinha | 1,245.10 mi (2,003.79 km) |
| Isernia to Lousa | 1,176.26 mi (1,893.00 km) |
| Isernia to Lousada | 1,161.03 mi (1,868.50 km) |
| Isernia to Macedo de Cavaleiros | 1,093.12 mi (1,759.20 km) |
| Isernia to Mafamude | 1,181.68 mi (1,901.72 km) |
| Isernia to Mafra | 1,252.16 mi (2,015.15 km) |
| Isernia to Maia | 1,181.07 mi (1,900.75 km) |
| Isernia to Mangualde | 1,144.41 mi (1,841.74 km) |
