| Gulf Shores to Montalegre | 4,375.25 mi (7,041.29 km) |
| Gulf Shores to Montemor-o-Novo | 4,423.74 mi (7,119.32 km) |
| Gulf Shores to Montemor-o-Velho | 4,366.54 mi (7,027.27 km) |
| Gulf Shores to Montijo | 4,388.14 mi (7,062.03 km) |
| Gulf Shores to Mortagua | 4,383.28 mi (7,054.21 km) |
| Gulf Shores to Moura | 4,474.79 mi (7,201.48 km) |
| Gulf Shores to Murtosa | 4,356.88 mi (7,011.72 km) |
| Gulf Shores to Nazare | 4,359.51 mi (7,015.95 km) |
| Gulf Shores to Nelas | 4,400.57 mi (7,082.04 km) |
| Gulf Shores to Obidos | 4,360.15 mi (7,016.99 km) |
| Gulf Shores to Odemira | 4,426.75 mi (7,124.17 km) |
| Gulf Shores to Odivelas | 4,371.49 mi (7,035.23 km) |
| Gulf Shores to Oeiras | 4,366.85 mi (7,027.77 km) |
| Gulf Shores to Olhao | 4,480.76 mi (7,211.08 km) |
| Gulf Shores to Oliveira de Azemeis | 4,362.48 mi (7,020.73 km) |
