| Saint-Brieuc to Marco de Canavezes | 570.69 mi (918.44 km) |
| Saint-Brieuc to Marinha Grande | 677.83 mi (1,090.87 km) |
| Saint-Brieuc to Massama | 747.93 mi (1,203.68 km) |
| Saint-Brieuc to Matosinhos | 583.55 mi (939.14 km) |
| Saint-Brieuc to Mealhada | 627.41 mi (1,009.71 km) |
| Saint-Brieuc to Melgaco | 516.20 mi (830.75 km) |
| Saint-Brieuc to Melres | 583.63 mi (939.26 km) |
| Saint-Brieuc to Mira | 630.61 mi (1,014.87 km) |
| Saint-Brieuc to Miranda do Corvo | 642.79 mi (1,034.46 km) |
| Saint-Brieuc to Mirandela | 531.16 mi (854.81 km) |
| Saint-Brieuc to Mogadouro | 532.25 mi (856.58 km) |
| Saint-Brieuc to Moimenta da Beira | 572.04 mi (920.61 km) |
| Saint-Brieuc to Moita | 748.58 mi (1,204.72 km) |
| Saint-Brieuc to Moncao | 524.21 mi (843.64 km) |
| Saint-Brieuc to Montalegre | 522.83 mi (841.41 km) |
