| Middlesbrough to Lagoa | 1,252.63 mi (2,015.92 km) |
| Middlesbrough to Lagoa | 1,630.00 mi (2,623.23 km) |
| Middlesbrough to Lagos | 1,257.59 mi (2,023.90 km) |
| Middlesbrough to Lamego | 978.69 mi (1,575.06 km) |
| Middlesbrough to Leiria | 1,082.80 mi (1,742.60 km) |
| Middlesbrough to Lisbon | 1,156.01 mi (1,860.42 km) |
| Middlesbrough to Loule | 1,245.88 mi (2,005.04 km) |
| Middlesbrough to Loures | 1,149.09 mi (1,849.29 km) |
| Middlesbrough to Lourinha | 1,124.64 mi (1,809.93 km) |
| Middlesbrough to Lousa | 1,050.63 mi (1,690.83 km) |
| Middlesbrough to Lousada | 971.77 mi (1,563.91 km) |
| Middlesbrough to Macedo de Cavaleiros | 938.05 mi (1,509.64 km) |
| Middlesbrough to Mafamude | 989.55 mi (1,592.53 km) |
| Middlesbrough to Mafra | 1,144.46 mi (1,841.84 km) |
| Middlesbrough to Maia | 981.98 mi (1,580.35 km) |
