| Boulogne-sur-Mer to Lagoa | 1,603.11 mi (2,579.96 km) |
| Boulogne-sur-Mer to Lagos | 1,069.21 mi (1,720.72 km) |
| Boulogne-sur-Mer to Lamego | 803.31 mi (1,292.80 km) |
| Boulogne-sur-Mer to Leiria | 910.15 mi (1,464.74 km) |
| Boulogne-sur-Mer to Lisbon | 981.00 mi (1,578.77 km) |
| Boulogne-sur-Mer to Loule | 1,050.91 mi (1,691.28 km) |
| Boulogne-sur-Mer to Loures | 974.91 mi (1,568.96 km) |
| Boulogne-sur-Mer to Lourinha | 954.41 mi (1,535.97 km) |
| Boulogne-sur-Mer to Lousa | 873.82 mi (1,406.28 km) |
| Boulogne-sur-Mer to Lousada | 803.36 mi (1,292.88 km) |
| Boulogne-sur-Mer to Macedo de Cavaleiros | 754.89 mi (1,214.88 km) |
| Boulogne-sur-Mer to Mafamude | 824.32 mi (1,326.61 km) |
| Boulogne-sur-Mer to Mafra | 972.77 mi (1,565.52 km) |
| Boulogne-sur-Mer to Maia | 817.85 mi (1,316.20 km) |
| Boulogne-sur-Mer to Mangualde | 831.65 mi (1,338.40 km) |
