| Brookings to Smolyan | 5,485.91 mi (8,828.73 km) |
| Brookings to Sofia | 5,381.80 mi (8,661.17 km) |
| Brookings to Sopot | 5,429.77 mi (8,738.37 km) |
| Brookings to Sozopol | 5,534.25 mi (8,906.51 km) |
| Brookings to Sredets | 5,522.60 mi (8,887.77 km) |
| Brookings to Stamboliyski | 5,450.82 mi (8,772.25 km) |
| Brookings to Stara Zagora | 5,469.88 mi (8,802.92 km) |
| Brookings to Svilengrad | 5,523.56 mi (8,889.31 km) |
| Brookings to Svishtov | 5,396.19 mi (8,684.33 km) |
| Brookings to Targovishte | 5,454.19 mi (8,777.67 km) |
| Brookings to Teteven | 5,400.08 mi (8,690.58 km) |
| Brookings to Troyan | 5,416.11 mi (8,716.38 km) |
| Brookings to Tryavna | 5,441.58 mi (8,757.38 km) |
| Brookings to Tutrakan | 5,411.39 mi (8,708.79 km) |
| Brookings to Varna | 5,496.54 mi (8,845.83 km) |
