| Caldicot to Octeville | 144.11 mi (231.92 km) |
| Caldicot to Oignies | 261.22 mi (420.40 km) |
| Caldicot to Oissel | 229.46 mi (369.28 km) |
| Caldicot to Olivet | 330.68 mi (532.19 km) |
| Caldicot to Ollioules | 708.05 mi (1,139.49 km) |
| Caldicot to Olonne-sur-Mer | 352.04 mi (566.55 km) |
| Caldicot to Oloron-Sainte-Marie | 588.68 mi (947.40 km) |
| Caldicot to Onet Village | 556.68 mi (895.88 km) |
| Caldicot to Onnaing | 288.19 mi (463.80 km) |
| Caldicot to Orange | 622.11 mi (1,001.18 km) |
| Caldicot to Orchies | 271.51 mi (436.95 km) |
| Caldicot to Orleans | 328.80 mi (529.15 km) |
| Caldicot to Orly | 300.68 mi (483.90 km) |
| Caldicot to Ormesson-sur-Marne | 303.64 mi (488.66 km) |
| Caldicot to Orsay | 296.08 mi (476.49 km) |
