| Helsinki to Smolyan | 1,284.31 mi (2,066.90 km) |
| Helsinki to Sofia | 1,209.01 mi (1,945.71 km) |
| Helsinki to Sopot | 1,210.60 mi (1,948.27 km) |
| Helsinki to Sozopol | 1,232.22 mi (1,983.06 km) |
| Helsinki to Sredets | 1,235.00 mi (1,987.54 km) |
| Helsinki to Stamboliyski | 1,246.39 mi (2,005.87 km) |
| Helsinki to Stara Zagora | 1,225.91 mi (1,972.91 km) |
| Helsinki to Svilengrad | 1,272.73 mi (2,048.26 km) |
| Helsinki to Svishtov | 1,143.91 mi (1,840.94 km) |
| Helsinki to Targovishte | 1,171.15 mi (1,884.78 km) |
| Helsinki to Teteven | 1,192.48 mi (1,919.10 km) |
| Helsinki to Troyan | 1,194.49 mi (1,922.34 km) |
| Helsinki to Tryavna | 1,195.82 mi (1,924.48 km) |
| Helsinki to Tutrakan | 1,116.03 mi (1,796.07 km) |
| Helsinki to Varna | 1,178.05 mi (1,895.88 km) |
