| Upminster to Oerlinghausen | 360.80 mi (580.65 km) |
| Upminster to Oestrich-Winkel | 354.99 mi (571.31 km) |
| Upminster to Offenburg | 402.06 mi (647.05 km) |
| Upminster to Oftersheim | 396.12 mi (637.49 km) |
| Upminster to Ohrdruf | 456.25 mi (734.26 km) |
| Upminster to Ohringen | 438.44 mi (705.60 km) |
| Upminster to Olbernhau | 570.01 mi (917.34 km) |
| Upminster to Olching | 543.78 mi (875.13 km) |
| Upminster to Oldenburg | 353.30 mi (568.59 km) |
| Upminster to Oldenburg in Holstein | 481.11 mi (774.27 km) |
| Upminster to Olfen | 305.93 mi (492.34 km) |
| Upminster to Olpe | 329.60 mi (530.45 km) |
| Upminster to Olsberg | 354.54 mi (570.58 km) |
| Upminster to Oranienburg | 555.88 mi (894.60 km) |
| Upminster to Ortenberg | 391.79 mi (630.52 km) |
