| Bellinzona to Smolyan | 841.03 mi (1,353.50 km) |
| Bellinzona to Sofia | 744.31 mi (1,197.85 km) |
| Bellinzona to Sopot | 811.90 mi (1,306.62 km) |
| Bellinzona to Sozopol | 956.80 mi (1,539.83 km) |
| Bellinzona to Sredets | 934.98 mi (1,504.71 km) |
| Bellinzona to Stamboliyski | 816.42 mi (1,313.89 km) |
| Bellinzona to Stara Zagora | 859.91 mi (1,383.89 km) |
| Bellinzona to Svilengrad | 904.63 mi (1,455.86 km) |
| Bellinzona to Svishtov | 816.71 mi (1,314.37 km) |
| Bellinzona to Targovishte | 883.45 mi (1,421.78 km) |
| Bellinzona to Teteven | 782.20 mi (1,258.83 km) |
| Bellinzona to Troyan | 804.18 mi (1,294.21 km) |
| Bellinzona to Tryavna | 841.45 mi (1,354.18 km) |
| Bellinzona to Tutrakan | 868.24 mi (1,397.30 km) |
| Bellinzona to Varna | 947.59 mi (1,525.00 km) |
