| East Chicago to Smolyan | 5,298.52 mi (8,527.14 km) |
| East Chicago to Sofia | 5,194.41 mi (8,359.60 km) |
| East Chicago to Sopot | 5,248.60 mi (8,446.81 km) |
| East Chicago to Sozopol | 5,365.63 mi (8,635.15 km) |
| East Chicago to Sredets | 5,351.24 mi (8,611.98 km) |
| East Chicago to Stamboliyski | 5,265.74 mi (8,474.39 km) |
| East Chicago to Stara Zagora | 5,291.67 mi (8,516.12 km) |
| East Chicago to Svilengrad | 5,344.23 mi (8,600.71 km) |
| East Chicago to Svishtov | 5,223.26 mi (8,406.02 km) |
| East Chicago to Targovishte | 5,284.91 mi (8,505.24 km) |
| East Chicago to Teteven | 5,218.20 mi (8,397.88 km) |
| East Chicago to Troyan | 5,236.10 mi (8,426.70 km) |
| East Chicago to Tryavna | 5,265.11 mi (8,473.37 km) |
| East Chicago to Tutrakan | 5,246.75 mi (8,443.83 km) |
| East Chicago to Varna | 5,333.35 mi (8,583.20 km) |
