| Buffalo to Smolyan | 4,914.48 mi (7,909.09 km) |
| Buffalo to Sofia | 4,810.96 mi (7,742.48 km) |
| Buffalo to Sopot | 4,868.00 mi (7,834.29 km) |
| Buffalo to Sozopol | 4,990.84 mi (8,031.99 km) |
| Buffalo to Sredets | 4,975.10 mi (8,006.65 km) |
| Buffalo to Stamboliyski | 4,883.04 mi (7,858.50 km) |
| Buffalo to Stara Zagora | 4,912.34 mi (7,905.65 km) |
| Buffalo to Svilengrad | 4,964.02 mi (7,988.82 km) |
| Buffalo to Svishtov | 4,847.07 mi (7,800.61 km) |
| Buffalo to Targovishte | 4,910.26 mi (7,902.30 km) |
| Buffalo to Teteven | 4,837.41 mi (7,785.05 km) |
| Buffalo to Troyan | 4,856.17 mi (7,815.25 km) |
| Buffalo to Tryavna | 4,886.82 mi (7,864.58 km) |
| Buffalo to Tutrakan | 4,874.80 mi (7,845.23 km) |
| Buffalo to Varna | 4,961.64 mi (7,984.98 km) |
