| Greenford to Oberkirch | 427.33 mi (687.72 km) |
| Greenford to Obernburg am Main | 431.19 mi (693.93 km) |
| Greenford to Obernkirchen | 406.50 mi (654.20 km) |
| Greenford to Oberschleissheim | 575.93 mi (926.86 km) |
| Greenford to Oberstdorf | 554.87 mi (892.98 km) |
| Greenford to Obertraubling | 579.81 mi (933.12 km) |
| Greenford to Obertshausen | 413.23 mi (665.03 km) |
| Greenford to Oberursel | 399.59 mi (643.08 km) |
| Greenford to Ochsenfurt | 474.51 mi (763.65 km) |
| Greenford to Ochsenhausen | 516.99 mi (832.01 km) |
| Greenford to Ochtrup | 324.86 mi (522.82 km) |
| Greenford to Odenthal | 324.31 mi (521.93 km) |
| Greenford to Oelde | 364.48 mi (586.58 km) |
| Greenford to Oelsnitz | 549.22 mi (883.88 km) |
| Greenford to Oer-Erkenschwick | 326.20 mi (524.97 km) |
