| Youngstown to Smolyan | 5,065.52 mi (8,152.16 km) |
| Youngstown to Sofia | 4,962.12 mi (7,985.76 km) |
| Youngstown to Sopot | 5,019.55 mi (8,078.19 km) |
| Youngstown to Sozopol | 5,143.11 mi (8,277.04 km) |
| Youngstown to Sredets | 5,127.21 mi (8,251.44 km) |
| Youngstown to Stamboliyski | 5,034.29 mi (8,101.91 km) |
| Youngstown to Stara Zagora | 5,064.05 mi (8,149.81 km) |
| Youngstown to Svilengrad | 5,115.60 mi (8,232.76 km) |
| Youngstown to Svishtov | 4,999.21 mi (8,045.45 km) |
| Youngstown to Targovishte | 5,062.57 mi (8,147.42 km) |
| Youngstown to Teteven | 4,988.94 mi (8,028.93 km) |
| Youngstown to Troyan | 5,007.82 mi (8,059.31 km) |
| Youngstown to Tryavna | 5,038.69 mi (8,108.98 km) |
| Youngstown to Tutrakan | 5,027.42 mi (8,090.86 km) |
| Youngstown to Varna | 5,114.26 mi (8,230.61 km) |
