| Port Orange to Oberkirch | 4,702.45 mi (7,567.86 km) |
| Port Orange to Obernburg am Main | 4,716.91 mi (7,591.14 km) |
| Port Orange to Obernkirchen | 4,660.29 mi (7,500.02 km) |
| Port Orange to Oberschleissheim | 4,858.76 mi (7,819.42 km) |
| Port Orange to Oberstdorf | 4,824.81 mi (7,764.79 km) |
| Port Orange to Obertraubling | 4,865.54 mi (7,830.34 km) |
| Port Orange to Obertshausen | 4,698.73 mi (7,561.88 km) |
| Port Orange to Oberursel | 4,684.88 mi (7,539.59 km) |
| Port Orange to Ochsenfurt | 4,760.22 mi (7,660.83 km) |
| Port Orange to Ochsenhausen | 4,793.88 mi (7,715.00 km) |
| Port Orange to Ochtrup | 4,584.15 mi (7,377.48 km) |
| Port Orange to Odenthal | 4,605.88 mi (7,412.45 km) |
| Port Orange to Oelde | 4,630.90 mi (7,452.72 km) |
| Port Orange to Oelsnitz | 4,828.06 mi (7,770.00 km) |
| Port Orange to Oer-Erkenschwick | 4,598.44 mi (7,400.48 km) |
