| Sedro-Woolley to Smolyan | 5,893.76 mi (9,485.10 km) |
| Sedro-Woolley to Sofia | 5,796.13 mi (9,327.96 km) |
| Sedro-Woolley to Sopot | 5,826.01 mi (9,376.06 km) |
| Sedro-Woolley to Sozopol | 5,893.38 mi (9,484.48 km) |
| Sedro-Woolley to Sredets | 5,889.16 mi (9,477.69 km) |
| Sedro-Woolley to Stamboliyski | 5,855.24 mi (9,423.11 km) |
| Sedro-Woolley to Stara Zagora | 5,856.40 mi (9,424.97 km) |
| Sedro-Woolley to Svilengrad | 5,909.42 mi (9,510.30 km) |
| Sedro-Woolley to Svishtov | 5,774.59 mi (9,293.31 km) |
| Sedro-Woolley to Targovishte | 5,820.04 mi (9,366.45 km) |
| Sedro-Woolley to Teteven | 5,799.90 mi (9,334.04 km) |
| Sedro-Woolley to Troyan | 5,810.38 mi (9,350.90 km) |
| Sedro-Woolley to Tryavna | 5,825.69 mi (9,375.54 km) |
| Sedro-Woolley to Tutrakan | 5,768.73 mi (9,283.88 km) |
| Sedro-Woolley to Varna | 5,844.89 mi (9,406.45 km) |
