| Blaine to Smolyan | 5,324.54 mi (8,569.02 km) |
| Blaine to Sofia | 5,220.31 mi (8,401.28 km) |
| Blaine to Sopot | 5,269.56 mi (8,480.54 km) |
| Blaine to Sozopol | 5,376.70 mi (8,652.97 km) |
| Blaine to Sredets | 5,364.48 mi (8,633.29 km) |
| Blaine to Stamboliyski | 5,289.86 mi (8,513.21 km) |
| Blaine to Stara Zagora | 5,310.31 mi (8,546.11 km) |
| Blaine to Svilengrad | 5,363.83 mi (8,632.24 km) |
| Blaine to Svishtov | 5,237.59 mi (8,429.09 km) |
| Blaine to Targovishte | 5,296.41 mi (8,523.75 km) |
| Blaine to Teteven | 5,239.69 mi (8,432.47 km) |
| Blaine to Troyan | 5,256.11 mi (8,458.89 km) |
| Blaine to Tryavna | 5,282.32 mi (8,501.08 km) |
| Blaine to Tutrakan | 5,254.51 mi (8,456.32 km) |
| Blaine to Varna | 5,340.08 mi (8,594.02 km) |
