| Royston to Nasaud | 1,134.71 mi (1,826.14 km) |
| Royston to Navodari | 1,411.44 mi (2,271.49 km) |
| Royston to Negresti-Oas | 1,076.06 mi (1,731.76 km) |
| Royston to Nehoiu | 1,277.76 mi (2,056.36 km) |
| Royston to Ocna Mures | 1,140.10 mi (1,834.82 km) |
| Royston to Odobesti | 1,295.35 mi (2,084.67 km) |
| Royston to Odorheiu Secuiesc | 1,202.98 mi (1,936.01 km) |
| Royston to Oltenita | 1,338.18 mi (2,153.60 km) |
| Royston to Onesti | 1,266.47 mi (2,038.19 km) |
| Royston to Oradea | 1,036.91 mi (1,668.74 km) |
| Royston to Orastie | 1,131.14 mi (1,820.39 km) |
| Royston to Oravita | 1,098.90 mi (1,768.52 km) |
| Royston to Orsova | 1,139.92 mi (1,834.53 km) |
| Royston to Otelu Rosu | 1,108.13 mi (1,783.37 km) |
| Royston to Otopeni | 1,297.20 mi (2,087.65 km) |
