| North Tonawanda to Smolyan | 4,908.78 mi (7,899.93 km) |
| North Tonawanda to Sofia | 4,805.24 mi (7,733.28 km) |
| North Tonawanda to Sopot | 4,862.18 mi (7,824.93 km) |
| North Tonawanda to Sozopol | 4,984.84 mi (8,022.32 km) |
| North Tonawanda to Sredets | 4,969.14 mi (7,997.05 km) |
| North Tonawanda to Stamboliyski | 4,877.30 mi (7,849.26 km) |
| North Tonawanda to Stara Zagora | 4,906.48 mi (7,896.22 km) |
| North Tonawanda to Svilengrad | 4,958.20 mi (7,979.45 km) |
| North Tonawanda to Svishtov | 4,841.10 mi (7,791.00 km) |
| North Tonawanda to Targovishte | 4,904.25 mi (7,892.62 km) |
| North Tonawanda to Teteven | 4,831.59 mi (7,775.70 km) |
| North Tonawanda to Troyan | 4,850.33 mi (7,805.85 km) |
| North Tonawanda to Tryavna | 4,880.93 mi (7,855.10 km) |
| North Tonawanda to Tutrakan | 4,868.70 mi (7,835.41 km) |
| North Tonawanda to Varna | 4,955.53 mi (7,975.15 km) |
