| Royston to Oerlinghausen | 369.29 mi (594.31 km) |
| Royston to Oestrich-Winkel | 375.91 mi (604.96 km) |
| Royston to Offenburg | 429.31 mi (690.91 km) |
| Royston to Oftersheim | 419.11 mi (674.49 km) |
| Royston to Ohrdruf | 470.27 mi (756.83 km) |
| Royston to Ohringen | 460.88 mi (741.71 km) |
| Royston to Olbernhau | 583.13 mi (938.46 km) |
| Royston to Olching | 567.34 mi (913.05 km) |
| Royston to Oldenburg | 353.58 mi (569.03 km) |
| Royston to Oldenburg in Holstein | 477.05 mi (767.73 km) |
| Royston to Olfen | 316.45 mi (509.27 km) |
| Royston to Olpe | 344.80 mi (554.90 km) |
| Royston to Olsberg | 367.11 mi (590.80 km) |
| Royston to Oranienburg | 560.20 mi (901.55 km) |
| Royston to Ortenberg | 409.60 mi (659.18 km) |
