| Upminster to Oberkirch | 405.12 mi (651.97 km) |
| Upminster to Obernburg am Main | 406.43 mi (654.09 km) |
| Upminster to Obernkirchen | 380.85 mi (612.92 km) |
| Upminster to Oberschleissheim | 552.17 mi (888.63 km) |
| Upminster to Oberstdorf | 532.86 mi (857.55 km) |
| Upminster to Obertraubling | 555.16 mi (893.44 km) |
| Upminster to Obertshausen | 388.29 mi (624.89 km) |
| Upminster to Oberursel | 374.56 mi (602.80 km) |
| Upminster to Ochsenfurt | 449.72 mi (723.76 km) |
| Upminster to Ochsenhausen | 494.24 mi (795.41 km) |
| Upminster to Ochtrup | 299.23 mi (481.56 km) |
| Upminster to Odenthal | 298.70 mi (480.71 km) |
| Upminster to Oelde | 338.66 mi (545.03 km) |
| Upminster to Oelsnitz | 523.60 mi (842.65 km) |
| Upminster to Oer-Erkenschwick | 300.35 mi (483.37 km) |
