| Royston to Olivares | 1,053.75 mi (1,695.84 km) |
| Royston to Olivenza | 983.93 mi (1,583.49 km) |
| Royston to Olot | 691.62 mi (1,113.06 km) |
| Royston to Onate | 632.65 mi (1,018.15 km) |
| Royston to Onda | 835.05 mi (1,343.88 km) |
| Royston to Onteniente | 914.19 mi (1,471.24 km) |
| Royston to Orihuela | 965.68 mi (1,554.12 km) |
| Royston to Osuna | 1,052.90 mi (1,694.48 km) |
| Royston to Ourense | 764.33 mi (1,230.07 km) |
| Royston to Oviedo | 657.98 mi (1,058.91 km) |
| Royston to Paiporta | 872.12 mi (1,403.54 km) |
| Royston to Pajara | 1,790.74 mi (2,881.92 km) |
| Royston to Palafolls | 728.75 mi (1,172.81 km) |
| Royston to Palafrugell | 715.61 mi (1,151.67 km) |
| Royston to Palamos | 720.14 mi (1,158.96 km) |
