| Viterbo to Lagoa | 2,001.47 mi (3,221.05 km) |
| Viterbo to Lagos | 1,159.53 mi (1,866.09 km) |
| Viterbo to Lamego | 1,028.03 mi (1,654.46 km) |
| Viterbo to Leiria | 1,101.26 mi (1,772.30 km) |
| Viterbo to Lisbon | 1,141.03 mi (1,836.31 km) |
| Viterbo to Loule | 1,124.57 mi (1,809.82 km) |
| Viterbo to Loures | 1,139.38 mi (1,833.66 km) |
| Viterbo to Lourinha | 1,137.30 mi (1,830.31 km) |
| Viterbo to Lousa | 1,066.23 mi (1,715.94 km) |
| Viterbo to Lousada | 1,047.24 mi (1,685.37 km) |
| Viterbo to Macedo de Cavaleiros | 979.07 mi (1,575.66 km) |
| Viterbo to Mafamude | 1,068.29 mi (1,719.24 km) |
| Viterbo to Mafra | 1,145.33 mi (1,843.23 km) |
| Viterbo to Maia | 1,067.33 mi (1,717.70 km) |
| Viterbo to Mangualde | 1,033.02 mi (1,662.49 km) |
