| Saint-Brieuc to Opwijk | 353.34 mi (568.65 km) |
| Saint-Brieuc to Ostend | 314.82 mi (506.65 km) |
| Saint-Brieuc to Oud-Heverlee | 368.71 mi (593.39 km) |
| Saint-Brieuc to Oud-Turnhout | 395.13 mi (635.90 km) |
| Saint-Brieuc to Oudenaarde | 327.00 mi (526.26 km) |
| Saint-Brieuc to Oudenburg | 316.08 mi (508.68 km) |
| Saint-Brieuc to Oupeye | 405.55 mi (652.67 km) |
| Saint-Brieuc to Overijse | 362.00 mi (582.59 km) |
| Saint-Brieuc to Overpelt | 409.16 mi (658.47 km) |
| Saint-Brieuc to Paal | 394.56 mi (634.98 km) |
| Saint-Brieuc to Peer | 408.31 mi (657.11 km) |
| Saint-Brieuc to Pepinster | 409.80 mi (659.51 km) |
| Saint-Brieuc to Peruwelz | 316.50 mi (509.35 km) |
| Saint-Brieuc to Perwez | 369.42 mi (594.53 km) |
| Saint-Brieuc to Philippeville | 349.05 mi (561.74 km) |
