| Cliftonville to Oerlinghausen | 313.56 mi (504.63 km) |
| Cliftonville to Oestrich-Winkel | 304.06 mi (489.33 km) |
| Cliftonville to Offenburg | 353.44 mi (568.81 km) |
| Cliftonville to Oftersheim | 345.52 mi (556.06 km) |
| Cliftonville to Ohrdruf | 406.23 mi (653.76 km) |
| Cliftonville to Ohringen | 387.73 mi (623.99 km) |
| Cliftonville to Olbernhau | 520.18 mi (837.15 km) |
| Cliftonville to Olching | 493.39 mi (794.03 km) |
| Cliftonville to Oldenburg | 312.28 mi (502.57 km) |
| Cliftonville to Oldenburg in Holstein | 443.29 mi (713.41 km) |
| Cliftonville to Olfen | 257.79 mi (414.87 km) |
| Cliftonville to Olpe | 279.40 mi (449.65 km) |
| Cliftonville to Olsberg | 305.23 mi (491.22 km) |
| Cliftonville to Oranienburg | 510.70 mi (821.89 km) |
| Cliftonville to Ortenberg | 340.95 mi (548.71 km) |
