| Royken to Smolyan | 1,394.36 mi (2,244.01 km) |
| Royken to Sofia | 1,297.31 mi (2,087.82 km) |
| Royken to Sopot | 1,326.82 mi (2,135.31 km) |
| Royken to Sozopol | 1,402.52 mi (2,257.14 km) |
| Royken to Sredets | 1,395.81 mi (2,246.34 km) |
| Royken to Stamboliyski | 1,355.84 mi (2,182.01 km) |
| Royken to Stara Zagora | 1,358.33 mi (2,186.02 km) |
| Royken to Svilengrad | 1,411.76 mi (2,272.01 km) |
| Royken to Svishtov | 1,277.35 mi (2,055.70 km) |
| Royken to Targovishte | 1,326.24 mi (2,134.38 km) |
| Royken to Teteven | 1,300.53 mi (2,092.99 km) |
| Royken to Troyan | 1,311.27 mi (2,110.29 km) |
| Royken to Tryavna | 1,327.80 mi (2,136.89 km) |
| Royken to Tutrakan | 1,277.19 mi (2,055.44 km) |
| Royken to Varna | 1,357.75 mi (2,185.08 km) |
