| Lockport to Smolyan | 5,322.34 mi (8,565.47 km) |
| Lockport to Sofia | 5,218.20 mi (8,397.88 km) |
| Lockport to Sopot | 5,272.16 mi (8,484.73 km) |
| Lockport to Sozopol | 5,388.72 mi (8,672.31 km) |
| Lockport to Sredets | 5,374.44 mi (8,649.32 km) |
| Lockport to Stamboliyski | 5,289.46 mi (8,512.56 km) |
| Lockport to Stara Zagora | 5,315.13 mi (8,553.87 km) |
| Lockport to Svilengrad | 5,367.75 mi (8,638.55 km) |
| Lockport to Svishtov | 5,246.48 mi (8,443.40 km) |
| Lockport to Targovishte | 5,308.01 mi (8,542.41 km) |
| Lockport to Teteven | 5,241.78 mi (8,435.82 km) |
| Lockport to Troyan | 5,259.61 mi (8,464.53 km) |
| Lockport to Tryavna | 5,288.49 mi (8,511.00 km) |
| Lockport to Tutrakan | 5,269.65 mi (8,480.68 km) |
| Lockport to Varna | 5,356.22 mi (8,620.00 km) |
