| Buffalo Grove to Smolyan | 5,291.75 mi (8,516.24 km) |
| Buffalo Grove to Sofia | 5,187.57 mi (8,348.59 km) |
| Buffalo Grove to Sopot | 5,241.21 mi (8,434.92 km) |
| Buffalo Grove to Sozopol | 5,357.15 mi (8,621.50 km) |
| Buffalo Grove to Sredets | 5,343.00 mi (8,598.73 km) |
| Buffalo Grove to Stamboliyski | 5,258.73 mi (8,463.10 km) |
| Buffalo Grove to Stara Zagora | 5,284.03 mi (8,503.83 km) |
| Buffalo Grove to Svilengrad | 5,336.73 mi (8,588.64 km) |
| Buffalo Grove to Svishtov | 5,215.09 mi (8,392.87 km) |
| Buffalo Grove to Targovishte | 5,276.44 mi (8,491.61 km) |
| Buffalo Grove to Teteven | 5,210.86 mi (8,386.06 km) |
| Buffalo Grove to Troyan | 5,228.60 mi (8,414.62 km) |
| Buffalo Grove to Tryavna | 5,257.29 mi (8,460.79 km) |
| Buffalo Grove to Tutrakan | 5,237.83 mi (8,429.47 km) |
| Buffalo Grove to Varna | 5,324.36 mi (8,568.72 km) |
