| Greenford to Oerlinghausen | 386.58 mi (622.15 km) |
| Greenford to Oestrich-Winkel | 379.62 mi (610.94 km) |
| Greenford to Offenburg | 424.02 mi (682.39 km) |
| Greenford to Oftersheim | 420.05 mi (676.01 km) |
| Greenford to Ohrdruf | 481.96 mi (775.64 km) |
| Greenford to Ohringen | 462.52 mi (744.35 km) |
| Greenford to Olbernhau | 595.77 mi (958.79 km) |
| Greenford to Olching | 567.38 mi (913.11 km) |
| Greenford to Oldenburg | 378.03 mi (608.38 km) |
| Greenford to Oldenburg in Holstein | 504.89 mi (812.54 km) |
| Greenford to Olfen | 331.76 mi (533.92 km) |
| Greenford to Olpe | 355.26 mi (571.73 km) |
| Greenford to Olsberg | 380.35 mi (612.12 km) |
| Greenford to Oranienburg | 581.35 mi (935.60 km) |
| Greenford to Ortenberg | 417.06 mi (671.19 km) |
