| Sillamae to Smolyan | 1,237.61 mi (1,991.74 km) |
| Sillamae to Sofia | 1,168.79 mi (1,880.98 km) |
| Sillamae to Sopot | 1,163.98 mi (1,873.25 km) |
| Sillamae to Sozopol | 1,172.96 mi (1,887.70 km) |
| Sillamae to Sredets | 1,177.82 mi (1,895.52 km) |
| Sillamae to Stamboliyski | 1,200.57 mi (1,932.13 km) |
| Sillamae to Stara Zagora | 1,175.31 mi (1,891.48 km) |
| Sillamae to Svilengrad | 1,219.74 mi (1,962.98 km) |
| Sillamae to Svishtov | 1,094.84 mi (1,761.97 km) |
| Sillamae to Targovishte | 1,116.52 mi (1,796.87 km) |
| Sillamae to Teteven | 1,148.12 mi (1,847.72 km) |
| Sillamae to Troyan | 1,148.09 mi (1,847.67 km) |
| Sillamae to Tryavna | 1,145.93 mi (1,844.20 km) |
| Sillamae to Tutrakan | 1,061.22 mi (1,707.87 km) |
| Sillamae to Varna | 1,117.70 mi (1,798.76 km) |
