| Colwyn Bay to Octeville | 268.11 mi (431.48 km) |
| Colwyn Bay to Oignies | 345.46 mi (555.96 km) |
| Colwyn Bay to Oissel | 342.22 mi (550.75 km) |
| Colwyn Bay to Olivet | 447.96 mi (720.92 km) |
| Colwyn Bay to Ollioules | 826.08 mi (1,329.45 km) |
| Colwyn Bay to Olonne-sur-Mer | 474.41 mi (763.50 km) |
| Colwyn Bay to Oloron-Sainte-Marie | 711.75 mi (1,145.45 km) |
| Colwyn Bay to Onet Village | 679.19 mi (1,093.05 km) |
| Colwyn Bay to Onnaing | 370.24 mi (595.84 km) |
| Colwyn Bay to Orange | 740.68 mi (1,192.01 km) |
| Colwyn Bay to Orchies | 354.09 mi (569.86 km) |
| Colwyn Bay to Orleans | 445.88 mi (717.58 km) |
| Colwyn Bay to Orly | 410.55 mi (660.72 km) |
| Colwyn Bay to Ormesson-sur-Marne | 412.38 mi (663.66 km) |
| Colwyn Bay to Orsay | 407.41 mi (655.66 km) |
