| Dartford to Oerlinghausen | 363.30 mi (584.68 km) |
| Dartford to Oestrich-Winkel | 354.37 mi (570.31 km) |
| Dartford to Offenburg | 399.42 mi (642.81 km) |
| Dartford to Oftersheim | 394.85 mi (635.45 km) |
| Dartford to Ohrdruf | 457.35 mi (736.04 km) |
| Dartford to Ohringen | 437.30 mi (703.76 km) |
| Dartford to Olbernhau | 571.26 mi (919.36 km) |
| Dartford to Olching | 542.24 mi (872.66 km) |
| Dartford to Oldenburg | 357.52 mi (575.37 km) |
| Dartford to Oldenburg in Holstein | 486.02 mi (782.17 km) |
| Dartford to Olfen | 308.04 mi (495.75 km) |
| Dartford to Olpe | 330.55 mi (531.97 km) |
| Dartford to Olsberg | 356.10 mi (573.09 km) |
| Dartford to Oranienburg | 559.12 mi (899.82 km) |
| Dartford to Ortenberg | 391.98 mi (630.84 km) |
