| Bothell to Smolyan | 5,939.74 mi (9,559.09 km) |
| Bothell to Sofia | 5,841.90 mi (9,401.63 km) |
| Bothell to Sopot | 5,872.15 mi (9,450.31 km) |
| Bothell to Sozopol | 5,940.24 mi (9,559.89 km) |
| Bothell to Sredets | 5,935.89 mi (9,552.88 km) |
| Bothell to Stamboliyski | 5,901.26 mi (9,497.15 km) |
| Bothell to Stara Zagora | 5,902.75 mi (9,499.55 km) |
| Bothell to Svilengrad | 5,955.82 mi (9,584.97 km) |
| Bothell to Svishtov | 5,821.02 mi (9,368.02 km) |
| Bothell to Targovishte | 5,866.72 mi (9,441.58 km) |
| Bothell to Teteven | 5,845.96 mi (9,408.16 km) |
| Bothell to Troyan | 5,856.54 mi (9,425.19 km) |
| Bothell to Tryavna | 5,872.05 mi (9,450.15 km) |
| Bothell to Tutrakan | 5,815.52 mi (9,359.18 km) |
| Bothell to Varna | 5,891.89 mi (9,482.09 km) |
