| Royston to Montana | 1,226.43 mi (1,973.75 km) |
| Royston to Nova Zagora | 1,377.06 mi (2,216.17 km) |
| Royston to Novi Iskar | 1,257.35 mi (2,023.50 km) |
| Royston to Novi Pazar | 1,390.16 mi (2,237.25 km) |
| Royston to Omurtag | 1,368.16 mi (2,201.84 km) |
| Royston to Panagyurishte | 1,303.36 mi (2,097.55 km) |
| Royston to Parvomay | 1,361.82 mi (2,191.63 km) |
| Royston to Pavlikeni | 1,317.80 mi (2,120.79 km) |
| Royston to Pazardzhik | 1,322.36 mi (2,128.13 km) |
| Royston to Pernik | 1,253.54 mi (2,017.37 km) |
| Royston to Peshtera | 1,328.37 mi (2,137.81 km) |
| Royston to Petrich | 1,314.52 mi (2,115.52 km) |
| Royston to Pleven | 1,282.64 mi (2,064.21 km) |
| Royston to Plovdiv | 1,341.07 mi (2,158.25 km) |
| Royston to Pomorie | 1,438.89 mi (2,315.67 km) |
