| Shannon to Lagoa | 1,308.72 mi (2,106.18 km) |
| Shannon to Lagos | 1,078.65 mi (1,735.92 km) |
| Shannon to Lamego | 803.90 mi (1,293.76 km) |
| Shannon to Leiria | 895.71 mi (1,441.51 km) |
| Shannon to Lisbon | 966.60 mi (1,555.59 km) |
| Shannon to Loule | 1,076.17 mi (1,731.92 km) |
| Shannon to Loures | 959.15 mi (1,543.60 km) |
| Shannon to Lourinha | 931.63 mi (1,499.32 km) |
| Shannon to Lousa | 871.15 mi (1,401.99 km) |
| Shannon to Lousada | 789.16 mi (1,270.03 km) |
| Shannon to Macedo de Cavaleiros | 777.22 mi (1,250.82 km) |
| Shannon to Mafamude | 801.47 mi (1,289.85 km) |
| Shannon to Mafra | 951.85 mi (1,531.86 km) |
| Shannon to Maia | 793.31 mi (1,276.70 km) |
| Shannon to Mangualde | 838.31 mi (1,349.12 km) |
