| Bayou Blue to Montalegre | 4,546.05 mi (7,316.16 km) |
| Bayou Blue to Montemor-o-Novo | 4,598.22 mi (7,400.12 km) |
| Bayou Blue to Montemor-o-Velho | 4,539.54 mi (7,305.68 km) |
| Bayou Blue to Montijo | 4,562.78 mi (7,343.08 km) |
| Bayou Blue to Mortagua | 4,555.85 mi (7,331.93 km) |
| Bayou Blue to Moura | 4,649.57 mi (7,482.76 km) |
| Bayou Blue to Murtosa | 4,529.22 mi (7,289.07 km) |
| Bayou Blue to Nazare | 4,533.23 mi (7,295.54 km) |
| Bayou Blue to Nelas | 4,572.93 mi (7,359.43 km) |
| Bayou Blue to Obidos | 4,534.16 mi (7,297.03 km) |
| Bayou Blue to Odemira | 4,602.40 mi (7,406.85 km) |
| Bayou Blue to Odivelas | 4,546.09 mi (7,316.23 km) |
| Bayou Blue to Oeiras | 4,541.60 mi (7,309.01 km) |
| Bayou Blue to Olhao | 4,656.71 mi (7,494.25 km) |
| Bayou Blue to Oliveira de Azemeis | 4,534.65 mi (7,297.81 km) |
