| Sylvania to Smolyan | 5,155.56 mi (8,297.07 km) |
| Sylvania to Sofia | 5,051.73 mi (8,129.98 km) |
| Sylvania to Sopot | 5,107.53 mi (8,219.78 km) |
| Sylvania to Sozopol | 5,227.82 mi (8,413.36 km) |
| Sylvania to Sredets | 5,212.68 mi (8,388.99 km) |
| Sylvania to Stamboliyski | 5,123.51 mi (8,245.50 km) |
| Sylvania to Stara Zagora | 5,151.32 mi (8,290.25 km) |
| Sylvania to Svilengrad | 5,203.42 mi (8,374.10 km) |
| Sylvania to Svishtov | 5,084.61 mi (8,182.88 km) |
| Sylvania to Targovishte | 5,147.13 mi (8,283.51 km) |
| Sylvania to Teteven | 5,077.01 mi (8,170.65 km) |
| Sylvania to Troyan | 5,095.40 mi (8,200.25 km) |
| Sylvania to Tryavna | 5,125.33 mi (8,248.41 km) |
| Sylvania to Tutrakan | 5,110.42 mi (8,224.43 km) |
| Sylvania to Varna | 5,197.20 mi (8,364.08 km) |
