| Park Forest to Smolyan | 5,315.08 mi (8,553.80 km) |
| Park Forest to Sofia | 5,210.97 mi (8,386.25 km) |
| Park Forest to Sopot | 5,265.16 mi (8,473.45 km) |
| Park Forest to Sozopol | 5,382.17 mi (8,661.76 km) |
| Park Forest to Sredets | 5,367.78 mi (8,638.60 km) |
| Park Forest to Stamboliyski | 5,282.30 mi (8,501.03 km) |
| Park Forest to Stara Zagora | 5,308.22 mi (8,542.76 km) |
| Park Forest to Svilengrad | 5,360.79 mi (8,627.35 km) |
| Park Forest to Svishtov | 5,239.80 mi (8,432.65 km) |
| Park Forest to Targovishte | 5,301.45 mi (8,531.85 km) |
| Park Forest to Teteven | 5,234.75 mi (8,424.52 km) |
| Park Forest to Troyan | 5,252.66 mi (8,453.34 km) |
| Park Forest to Tryavna | 5,281.66 mi (8,500.01 km) |
| Park Forest to Tutrakan | 5,263.28 mi (8,470.42 km) |
| Park Forest to Varna | 5,349.88 mi (8,609.80 km) |
