| Rhyl to Octeville | 267.18 mi (429.98 km) |
| Rhyl to Oignies | 338.92 mi (545.44 km) |
| Rhyl to Oissel | 338.28 mi (544.40 km) |
| Rhyl to Olivet | 444.54 mi (715.41 km) |
| Rhyl to Ollioules | 822.57 mi (1,323.80 km) |
| Rhyl to Olonne-sur-Mer | 474.86 mi (764.22 km) |
| Rhyl to Oloron-Sainte-Marie | 711.91 mi (1,145.72 km) |
| Rhyl to Onet Village | 677.00 mi (1,089.53 km) |
| Rhyl to Onnaing | 363.50 mi (584.99 km) |
| Rhyl to Orange | 737.32 mi (1,186.60 km) |
| Rhyl to Orchies | 347.43 mi (559.13 km) |
| Rhyl to Orleans | 442.42 mi (712.01 km) |
| Rhyl to Orly | 406.08 mi (653.52 km) |
| Rhyl to Ormesson-sur-Marne | 407.77 mi (656.24 km) |
| Rhyl to Orsay | 403.13 mi (648.78 km) |
