| Grefrath to Lagoa | 1,809.85 mi (2,912.68 km) |
| Grefrath to Lagos | 1,227.74 mi (1,975.86 km) |
| Grefrath to Lamego | 975.38 mi (1,569.73 km) |
| Grefrath to Leiria | 1,080.99 mi (1,739.68 km) |
| Grefrath to Lisbon | 1,149.07 mi (1,849.25 km) |
| Grefrath to Loule | 1,205.57 mi (1,940.17 km) |
| Grefrath to Loures | 1,143.54 mi (1,840.36 km) |
| Grefrath to Lourinha | 1,125.54 mi (1,811.39 km) |
| Grefrath to Lousa | 1,043.32 mi (1,679.06 km) |
| Grefrath to Lousada | 978.93 mi (1,575.43 km) |
| Grefrath to Macedo de Cavaleiros | 924.24 mi (1,487.41 km) |
| Grefrath to Mafamude | 1,000.86 mi (1,610.73 km) |
| Grefrath to Mafra | 1,142.77 mi (1,839.10 km) |
| Grefrath to Maia | 995.07 mi (1,601.42 km) |
| Grefrath to Mangualde | 1,000.80 mi (1,610.63 km) |
