| Royston to Octeville | 181.58 mi (292.23 km) |
| Royston to Oignies | 169.88 mi (273.40 km) |
| Royston to Oissel | 193.13 mi (310.82 km) |
| Royston to Olivet | 301.35 mi (484.98 km) |
| Royston to Ollioules | 672.91 mi (1,082.94 km) |
| Royston to Olonne-sur-Mer | 388.85 mi (625.79 km) |
| Royston to Oloron-Sainte-Marie | 612.28 mi (985.37 km) |
| Royston to Onet Village | 544.12 mi (875.68 km) |
| Royston to Onnaing | 194.04 mi (312.27 km) |
| Royston to Orange | 589.83 mi (949.23 km) |
| Royston to Orchies | 178.08 mi (286.60 km) |
| Royston to Orleans | 298.89 mi (481.02 km) |
| Royston to Orly | 251.73 mi (405.12 km) |
| Royston to Ormesson-sur-Marne | 251.88 mi (405.36 km) |
| Royston to Orsay | 250.98 mi (403.92 km) |
