| Frondenberg to Lagoa | 1,871.16 mi (3,011.34 km) |
| Frondenberg to Lagos | 1,277.15 mi (2,055.37 km) |
| Frondenberg to Lamego | 1,028.74 mi (1,655.60 km) |
| Frondenberg to Leiria | 1,133.79 mi (1,824.66 km) |
| Frondenberg to Lisbon | 1,201.04 mi (1,932.89 km) |
| Frondenberg to Loule | 1,254.05 mi (2,018.20 km) |
| Frondenberg to Loures | 1,195.66 mi (1,924.24 km) |
| Frondenberg to Lourinha | 1,178.32 mi (1,896.32 km) |
| Frondenberg to Lousa | 1,095.89 mi (1,763.66 km) |
| Frondenberg to Lousada | 1,033.10 mi (1,662.61 km) |
| Frondenberg to Macedo de Cavaleiros | 977.10 mi (1,572.50 km) |
| Frondenberg to Mafamude | 1,055.21 mi (1,698.20 km) |
| Frondenberg to Mafra | 1,195.22 mi (1,923.53 km) |
| Frondenberg to Maia | 1,049.60 mi (1,689.17 km) |
| Frondenberg to Mangualde | 1,053.39 mi (1,695.27 km) |
