| Park Ridge to Smolyan | 5,295.00 mi (8,521.48 km) |
| Park Ridge to Sofia | 5,190.84 mi (8,353.85 km) |
| Park Ridge to Sopot | 5,244.63 mi (8,440.42 km) |
| Park Ridge to Sozopol | 5,360.86 mi (8,627.48 km) |
| Park Ridge to Sredets | 5,346.65 mi (8,604.60 km) |
| Park Ridge to Stamboliyski | 5,262.04 mi (8,468.44 km) |
| Park Ridge to Stara Zagora | 5,287.52 mi (8,509.44 km) |
| Park Ridge to Svilengrad | 5,340.18 mi (8,594.19 km) |
| Park Ridge to Svishtov | 5,218.72 mi (8,398.71 km) |
| Park Ridge to Targovishte | 5,280.15 mi (8,497.58 km) |
| Park Ridge to Teteven | 5,214.26 mi (8,391.54 km) |
| Park Ridge to Troyan | 5,232.05 mi (8,420.17 km) |
| Park Ridge to Tryavna | 5,260.83 mi (8,466.48 km) |
| Park Ridge to Tutrakan | 5,241.66 mi (8,435.64 km) |
| Park Ridge to Varna | 5,328.21 mi (8,574.92 km) |
