| Whitney to Smolyan | 6,496.23 mi (10,454.68 km) |
| Whitney to Sofia | 6,393.60 mi (10,289.51 km) |
| Whitney to Sopot | 6,434.75 mi (10,355.74 km) |
| Whitney to Sozopol | 6,524.74 mi (10,500.56 km) |
| Whitney to Sredets | 6,516.16 mi (10,486.75 km) |
| Whitney to Stamboliyski | 6,459.38 mi (10,395.36 km) |
| Whitney to Stara Zagora | 6,471.28 mi (10,414.52 km) |
| Whitney to Svilengrad | 6,525.28 mi (10,501.42 km) |
| Whitney to Svishtov | 6,393.37 mi (10,289.13 km) |
| Whitney to Targovishte | 6,446.67 mi (10,374.92 km) |
| Whitney to Teteven | 6,406.20 mi (10,309.79 km) |
| Whitney to Troyan | 6,420.13 mi (10,332.20 km) |
| Whitney to Tryavna | 6,441.66 mi (10,366.85 km) |
| Whitney to Tutrakan | 6,399.71 mi (10,299.34 km) |
| Whitney to Varna | 6,481.91 mi (10,431.63 km) |
