| Glendale Heights to Smolyan | 5,308.08 mi (8,542.53 km) |
| Glendale Heights to Sofia | 5,203.92 mi (8,374.90 km) |
| Glendale Heights to Sopot | 5,257.66 mi (8,461.39 km) |
| Glendale Heights to Sozopol | 5,373.78 mi (8,648.27 km) |
| Glendale Heights to Sredets | 5,359.59 mi (8,625.43 km) |
| Glendale Heights to Stamboliyski | 5,275.10 mi (8,489.46 km) |
| Glendale Heights to Stara Zagora | 5,300.52 mi (8,530.37 km) |
| Glendale Heights to Svilengrad | 5,353.20 mi (8,615.14 km) |
| Glendale Heights to Svishtov | 5,231.67 mi (8,419.56 km) |
| Glendale Heights to Targovishte | 5,293.07 mi (8,518.37 km) |
| Glendale Heights to Teteven | 5,227.29 mi (8,412.51 km) |
| Glendale Heights to Troyan | 5,245.06 mi (8,441.11 km) |
| Glendale Heights to Tryavna | 5,273.81 mi (8,487.38 km) |
| Glendale Heights to Tutrakan | 5,254.53 mi (8,456.35 km) |
| Glendale Heights to Varna | 5,341.07 mi (8,595.63 km) |
