| Siano to Lagoa | 2,145.61 mi (3,453.03 km) |
| Siano to Lagos | 1,277.28 mi (2,055.58 km) |
| Siano to Lamego | 1,171.27 mi (1,884.98 km) |
| Siano to Leiria | 1,236.90 mi (1,990.61 km) |
| Siano to Lisbon | 1,270.55 mi (2,044.75 km) |
| Siano to Loule | 1,241.13 mi (1,997.41 km) |
| Siano to Loures | 1,269.63 mi (2,043.27 km) |
| Siano to Lourinha | 1,270.29 mi (2,044.34 km) |
| Siano to Lousa | 1,203.58 mi (1,936.97 km) |
| Siano to Lousada | 1,192.01 mi (1,918.35 km) |
| Siano to Macedo de Cavaleiros | 1,124.49 mi (1,809.69 km) |
| Siano to Mafamude | 1,212.20 mi (1,950.85 km) |
| Siano to Mafra | 1,276.51 mi (2,054.34 km) |
| Siano to Maia | 1,211.95 mi (1,950.45 km) |
| Siano to Mangualde | 1,173.06 mi (1,887.85 km) |
