| Great Baddow to Montalegre | 787.34 mi (1,267.10 km) |
| Great Baddow to Montemor-o-Novo | 996.25 mi (1,603.31 km) |
| Great Baddow to Montemor-o-Velho | 910.53 mi (1,465.36 km) |
| Great Baddow to Montijo | 1,008.49 mi (1,623.01 km) |
| Great Baddow to Mortagua | 883.71 mi (1,422.20 km) |
| Great Baddow to Moura | 1,014.73 mi (1,633.05 km) |
| Great Baddow to Murtosa | 874.25 mi (1,406.97 km) |
| Great Baddow to Nazare | 954.63 mi (1,536.33 km) |
| Great Baddow to Nelas | 870.04 mi (1,400.19 km) |
| Great Baddow to Obidos | 971.81 mi (1,563.98 km) |
| Great Baddow to Odemira | 1,073.08 mi (1,726.96 km) |
| Great Baddow to Odivelas | 1,007.89 mi (1,622.04 km) |
| Great Baddow to Oeiras | 1,017.68 mi (1,637.80 km) |
| Great Baddow to Olhao | 1,093.99 mi (1,760.61 km) |
| Great Baddow to Oliveira de Azemeis | 863.95 mi (1,390.39 km) |
