| Marlborough to Oberkirch | 3,706.03 mi (5,964.28 km) |
| Marlborough to Obernburg am Main | 3,710.59 mi (5,971.61 km) |
| Marlborough to Obernkirchen | 3,640.49 mi (5,858.81 km) |
| Marlborough to Oberschleissheim | 3,857.78 mi (6,208.49 km) |
| Marlborough to Oberstdorf | 3,831.53 mi (6,166.26 km) |
| Marlborough to Obertraubling | 3,859.28 mi (6,210.92 km) |
| Marlborough to Obertshausen | 3,691.55 mi (5,940.97 km) |
| Marlborough to Oberursel | 3,677.29 mi (5,918.02 km) |
| Marlborough to Ochsenfurt | 3,753.52 mi (6,040.71 km) |
| Marlborough to Ochsenhausen | 3,797.01 mi (6,110.69 km) |
| Marlborough to Ochtrup | 3,567.04 mi (5,740.59 km) |
| Marlborough to Odenthal | 3,595.52 mi (5,786.43 km) |
| Marlborough to Oelde | 3,614.62 mi (5,817.18 km) |
| Marlborough to Oelsnitz | 3,813.79 mi (6,137.70 km) |
| Marlborough to Oer-Erkenschwick | 3,584.39 mi (5,768.52 km) |
