| Royan to Octeville | 278.04 mi (447.46 km) |
| Royan to Oignies | 383.11 mi (616.56 km) |
| Royan to Oissel | 275.57 mi (443.48 km) |
| Royan to Olivet | 208.29 mi (335.20 km) |
| Royan to Ollioules | 380.88 mi (612.97 km) |
| Royan to Olonne-sur-Mer | 72.13 mi (116.08 km) |
| Royan to Oloron-Sainte-Marie | 169.20 mi (272.30 km) |
| Royan to Onet Village | 197.77 mi (318.28 km) |
| Royan to Onnaing | 392.77 mi (632.11 km) |
| Royan to Orange | 304.26 mi (489.67 km) |
| Royan to Orchies | 389.18 mi (626.32 km) |
| Royan to Orleans | 210.51 mi (338.78 km) |
| Royan to Orly | 269.25 mi (433.31 km) |
| Royan to Ormesson-sur-Marne | 275.64 mi (443.60 km) |
| Royan to Orsay | 261.05 mi (420.12 km) |
