| North Liberty to Smolyan | 5,443.39 mi (8,760.29 km) |
| North Liberty to Sofia | 5,339.11 mi (8,592.47 km) |
| North Liberty to Sopot | 5,391.28 mi (8,676.43 km) |
| North Liberty to Sozopol | 5,504.21 mi (8,858.17 km) |
| North Liberty to Sredets | 5,490.73 mi (8,836.48 km) |
| North Liberty to Stamboliyski | 5,409.77 mi (8,706.19 km) |
| North Liberty to Stara Zagora | 5,433.41 mi (8,744.23 km) |
| North Liberty to Svilengrad | 5,486.44 mi (8,829.57 km) |
| North Liberty to Svishtov | 5,363.08 mi (8,631.04 km) |
| North Liberty to Targovishte | 5,423.58 mi (8,728.40 km) |
| North Liberty to Teteven | 5,361.06 mi (8,627.80 km) |
| North Liberty to Troyan | 5,378.36 mi (8,655.64 km) |
| North Liberty to Tryavna | 5,406.21 mi (8,700.46 km) |
| North Liberty to Tutrakan | 5,383.75 mi (8,664.30 km) |
| North Liberty to Varna | 5,470.00 mi (8,803.11 km) |
