| Dumbarton to Lagoa | 1,312.63 mi (2,112.47 km) |
| Dumbarton to Lagoa | 1,588.98 mi (2,557.22 km) |
| Dumbarton to Lagos | 1,316.19 mi (2,118.20 km) |
| Dumbarton to Lamego | 1,036.37 mi (1,667.87 km) |
| Dumbarton to Leiria | 1,135.86 mi (1,827.99 km) |
| Dumbarton to Lisbon | 1,208.65 mi (1,945.13 km) |
| Dumbarton to Loule | 1,308.76 mi (2,106.24 km) |
| Dumbarton to Loures | 1,201.40 mi (1,933.47 km) |
| Dumbarton to Lourinha | 1,175.20 mi (1,891.30 km) |
| Dumbarton to Lousa | 1,107.00 mi (1,781.55 km) |
| Dumbarton to Lousada | 1,025.66 mi (1,650.63 km) |
| Dumbarton to Macedo de Cavaleiros | 1,001.51 mi (1,611.78 km) |
| Dumbarton to Mafamude | 1,041.04 mi (1,675.40 km) |
| Dumbarton to Mafra | 1,195.40 mi (1,923.82 km) |
| Dumbarton to Maia | 1,033.08 mi (1,662.59 km) |
