| Tukwila to Smolyan | 5,959.86 mi (9,591.48 km) |
| Tukwila to Sofia | 5,861.97 mi (9,433.93 km) |
| Tukwila to Sopot | 5,892.31 mi (9,482.76 km) |
| Tukwila to Sozopol | 5,960.57 mi (9,592.62 km) |
| Tukwila to Sredets | 5,956.19 mi (9,585.56 km) |
| Tukwila to Stamboliyski | 5,921.39 mi (9,529.55 km) |
| Tukwila to Stara Zagora | 5,922.96 mi (9,532.08 km) |
| Tukwila to Svilengrad | 5,976.05 mi (9,617.52 km) |
| Tukwila to Svishtov | 5,841.25 mi (9,400.58 km) |
| Tukwila to Targovishte | 5,887.02 mi (9,474.24 km) |
| Tukwila to Teteven | 5,866.10 mi (9,440.57 km) |
| Tukwila to Troyan | 5,876.71 mi (9,457.65 km) |
| Tukwila to Tryavna | 5,892.27 mi (9,482.69 km) |
| Tukwila to Tutrakan | 5,835.84 mi (9,391.88 km) |
| Tukwila to Varna | 5,912.26 mi (9,514.87 km) |
