| Somero to Smolyan | 1,317.18 mi (2,119.79 km) |
| Somero to Sofia | 1,239.10 mi (1,994.13 km) |
| Somero to Sopot | 1,243.60 mi (2,001.38 km) |
| Somero to Sozopol | 1,270.80 mi (2,045.16 km) |
| Somero to Sredets | 1,272.67 mi (2,048.16 km) |
| Somero to Stamboliyski | 1,278.94 mi (2,058.26 km) |
| Somero to Stara Zagora | 1,260.67 mi (2,028.86 km) |
| Somero to Svilengrad | 1,308.46 mi (2,105.76 km) |
| Somero to Svishtov | 1,178.19 mi (1,896.11 km) |
| Somero to Targovishte | 1,207.83 mi (1,943.81 km) |
| Somero to Teteven | 1,224.50 mi (1,970.64 km) |
| Somero to Troyan | 1,227.43 mi (1,975.36 km) |
| Somero to Tryavna | 1,230.33 mi (1,980.02 km) |
| Somero to Tutrakan | 1,152.93 mi (1,855.46 km) |
| Somero to Varna | 1,217.22 mi (1,958.93 km) |
