| Bayou Blue to Mangualde | 4,575.31 mi (7,363.26 km) |
| Bayou Blue to Marco de Canavezes | 4,542.93 mi (7,311.14 km) |
| Bayou Blue to Marinha Grande | 4,536.52 mi (7,300.82 km) |
| Bayou Blue to Massama | 4,542.04 mi (7,309.70 km) |
| Bayou Blue to Matosinhos | 4,515.87 mi (7,267.59 km) |
| Bayou Blue to Mealhada | 4,546.23 mi (7,316.45 km) |
| Bayou Blue to Melgaco | 4,516.42 mi (7,268.47 km) |
| Bayou Blue to Melres | 4,533.25 mi (7,295.56 km) |
| Bayou Blue to Mira | 4,531.01 mi (7,291.96 km) |
| Bayou Blue to Miranda do Corvo | 4,558.51 mi (7,336.22 km) |
| Bayou Blue to Mirandela | 4,583.47 mi (7,376.38 km) |
| Bayou Blue to Mogadouro | 4,609.70 mi (7,418.59 km) |
| Bayou Blue to Moimenta da Beira | 4,573.94 mi (7,361.05 km) |
| Bayou Blue to Moita | 4,559.32 mi (7,337.52 km) |
| Bayou Blue to Moncao | 4,507.00 mi (7,253.32 km) |
