| Saint-Brieuc to Oria | 1,142.45 mi (1,838.59 km) |
| Saint-Brieuc to Oristano | 816.87 mi (1,314.63 km) |
| Saint-Brieuc to Orta Nova | 1,027.41 mi (1,653.46 km) |
| Saint-Brieuc to Orte | 842.56 mi (1,355.98 km) |
| Saint-Brieuc to Ortona | 932.04 mi (1,499.97 km) |
| Saint-Brieuc to Orvieto | 820.89 mi (1,321.10 km) |
| Saint-Brieuc to Orzinuovi | 635.40 mi (1,022.58 km) |
| Saint-Brieuc to Osimo | 851.63 mi (1,370.56 km) |
| Saint-Brieuc to Ospitaletto | 637.27 mi (1,025.59 km) |
| Saint-Brieuc to Ostuni | 1,130.96 mi (1,820.10 km) |
| Saint-Brieuc to Ottaviano | 995.51 mi (1,602.11 km) |
| Saint-Brieuc to Ovada | 603.66 mi (971.50 km) |
| Saint-Brieuc to Ozieri | 795.75 mi (1,280.64 km) |
| Saint-Brieuc to Paceco | 1,056.25 mi (1,699.87 km) |
| Saint-Brieuc to Pachino | 1,214.96 mi (1,955.29 km) |
