| Rouen to Obernburg am Main | 361.17 mi (581.25 km) |
| Rouen to Obernkirchen | 400.57 mi (644.65 km) |
| Rouen to Oberschleissheim | 483.09 mi (777.46 km) |
| Rouen to Oberstdorf | 443.84 mi (714.29 km) |
| Rouen to Obertraubling | 500.74 mi (805.86 km) |
| Rouen to Obertshausen | 348.23 mi (560.42 km) |
| Rouen to Oberursel | 337.76 mi (543.57 km) |
| Rouen to Ochsenfurt | 402.50 mi (647.77 km) |
| Rouen to Ochsenhausen | 414.24 mi (666.66 km) |
| Rouen to Ochtrup | 327.49 mi (527.04 km) |
| Rouen to Odenthal | 288.06 mi (463.59 km) |
| Rouen to Oelde | 350.54 mi (564.14 km) |
| Rouen to Oelsnitz | 496.82 mi (799.55 km) |
| Rouen to Oer-Erkenschwick | 310.18 mi (499.19 km) |
| Rouen to Oerlinghausen | 374.40 mi (602.54 km) |
