| Saint-Brieuc to Montemor-o-Novo | 733.61 mi (1,180.64 km) |
| Saint-Brieuc to Montemor-o-Velho | 646.14 mi (1,039.87 km) |
| Saint-Brieuc to Montijo | 744.74 mi (1,198.55 km) |
| Saint-Brieuc to Mortagua | 619.58 mi (997.11 km) |
| Saint-Brieuc to Moura | 754.50 mi (1,214.25 km) |
| Saint-Brieuc to Murtosa | 609.68 mi (981.19 km) |
| Saint-Brieuc to Nazare | 690.21 mi (1,110.79 km) |
| Saint-Brieuc to Nelas | 606.33 mi (975.79 km) |
| Saint-Brieuc to Obidos | 707.43 mi (1,138.50 km) |
| Saint-Brieuc to Odemira | 810.63 mi (1,304.59 km) |
| Saint-Brieuc to Odivelas | 743.77 mi (1,196.98 km) |
| Saint-Brieuc to Oeiras | 753.49 mi (1,212.62 km) |
| Saint-Brieuc to Olhao | 833.94 mi (1,342.09 km) |
| Saint-Brieuc to Oliveira de Azemeis | 599.42 mi (964.67 km) |
| Saint-Brieuc to Oliveira de Frades | 600.64 mi (966.63 km) |
