| Sun Valley to Smolyan | 6,399.95 mi (10,299.72 km) |
| Sun Valley to Sofia | 6,299.30 mi (10,137.74 km) |
| Sun Valley to Sopot | 6,335.19 mi (10,195.50 km) |
| Sun Valley to Sozopol | 6,414.48 mi (10,323.10 km) |
| Sun Valley to Sredets | 6,408.01 mi (10,312.70 km) |
| Sun Valley to Stamboliyski | 6,362.14 mi (10,238.87 km) |
| Sun Valley to Stara Zagora | 6,368.89 mi (10,249.73 km) |
| Sun Valley to Svilengrad | 6,422.62 mi (10,336.21 km) |
| Sun Valley to Svishtov | 6,288.77 mi (10,120.79 km) |
| Sun Valley to Targovishte | 6,338.44 mi (10,200.73 km) |
| Sun Valley to Teteven | 6,307.71 mi (10,151.27 km) |
| Sun Valley to Troyan | 6,320.02 mi (10,171.09 km) |
| Sun Valley to Tryavna | 6,338.62 mi (10,201.02 km) |
| Sun Valley to Tutrakan | 6,289.16 mi (10,121.43 km) |
| Sun Valley to Varna | 6,368.69 mi (10,249.41 km) |
