| Romans-sur-Isere to Oestrich-Winkel | 368.79 mi (593.52 km) |
| Romans-sur-Isere to Offenburg | 272.81 mi (439.05 km) |
| Romans-sur-Isere to Oftersheim | 341.62 mi (549.78 km) |
| Romans-sur-Isere to Ohrdruf | 477.94 mi (769.17 km) |
| Romans-sur-Isere to Ohringen | 354.96 mi (571.25 km) |
| Romans-sur-Isere to Olbernhau | 545.45 mi (877.82 km) |
| Romans-sur-Isere to Olching | 368.40 mi (592.88 km) |
| Romans-sur-Isere to Oldenburg | 577.34 mi (929.13 km) |
| Romans-sur-Isere to Oldenburg in Holstein | 689.91 mi (1,110.30 km) |
| Romans-sur-Isere to Olfen | 473.06 mi (761.32 km) |
| Romans-sur-Isere to Olpe | 431.98 mi (695.21 km) |
| Romans-sur-Isere to Olsberg | 463.19 mi (745.43 km) |
| Romans-sur-Isere to Oranienburg | 648.60 mi (1,043.82 km) |
| Romans-sur-Isere to Ortenberg | 411.23 mi (661.81 km) |
| Romans-sur-Isere to Oschatz | 568.95 mi (915.64 km) |
