| Des Plaines to Smolyan | 5,296.01 mi (8,523.11 km) |
| Des Plaines to Sofia | 5,191.85 mi (8,355.48 km) |
| Des Plaines to Sopot | 5,245.60 mi (8,441.98 km) |
| Des Plaines to Sozopol | 5,361.75 mi (8,628.91 km) |
| Des Plaines to Sredets | 5,347.56 mi (8,606.06 km) |
| Des Plaines to Stamboliyski | 5,263.04 mi (8,470.04 km) |
| Des Plaines to Stara Zagora | 5,288.47 mi (8,510.97 km) |
| Des Plaines to Svilengrad | 5,341.14 mi (8,595.74 km) |
| Des Plaines to Svishtov | 5,219.63 mi (8,400.18 km) |
| Des Plaines to Targovishte | 5,281.04 mi (8,499.01 km) |
| Des Plaines to Teteven | 5,215.23 mi (8,393.11 km) |
| Des Plaines to Troyan | 5,233.01 mi (8,421.71 km) |
| Des Plaines to Tryavna | 5,261.76 mi (8,467.99 km) |
| Des Plaines to Tutrakan | 5,242.52 mi (8,437.02 km) |
| Des Plaines to Varna | 5,329.06 mi (8,576.29 km) |
