| Roma to Oberkirch | 5,585.85 mi (8,989.56 km) |
| Roma to Obernburg am Main | 5,581.81 mi (8,983.06 km) |
| Roma to Obernkirchen | 5,496.46 mi (8,845.69 km) |
| Roma to Oberschleissheim | 5,732.79 mi (9,226.03 km) |
| Roma to Oberstdorf | 5,712.83 mi (9,193.90 km) |
| Roma to Obertraubling | 5,729.32 mi (9,220.44 km) |
| Roma to Obertshausen | 5,562.08 mi (8,951.30 km) |
| Roma to Oberursel | 5,547.52 mi (8,927.88 km) |
| Roma to Ochsenfurt | 5,624.02 mi (9,050.99 km) |
| Roma to Ochsenhausen | 5,675.85 mi (9,134.40 km) |
| Roma to Ochtrup | 5,427.44 mi (8,734.61 km) |
| Roma to Odenthal | 5,463.61 mi (8,792.82 km) |
| Roma to Oelde | 5,475.60 mi (8,812.12 km) |
| Roma to Oelsnitz | 5,675.27 mi (9,133.47 km) |
| Roma to Oer-Erkenschwick | 5,448.41 mi (8,768.36 km) |
