| West Plains to Smolyan | 5,706.69 mi (9,184.04 km) |
| West Plains to Sofia | 5,602.71 mi (9,016.69 km) |
| West Plains to Sopot | 5,657.65 mi (9,105.10 km) |
| West Plains to Sozopol | 5,775.99 mi (9,295.55 km) |
| West Plains to Sredets | 5,761.32 mi (9,271.95 km) |
| West Plains to Stamboliyski | 5,674.26 mi (9,131.84 km) |
| West Plains to Stara Zagora | 5,701.03 mi (9,174.93 km) |
| West Plains to Svilengrad | 5,753.40 mi (9,259.21 km) |
| West Plains to Svishtov | 5,633.29 mi (9,065.90 km) |
| West Plains to Targovishte | 5,695.27 mi (9,165.65 km) |
| West Plains to Teteven | 5,627.18 mi (9,056.08 km) |
| West Plains to Troyan | 5,645.31 mi (9,085.24 km) |
| West Plains to Tryavna | 5,674.70 mi (9,132.55 km) |
| West Plains to Tutrakan | 5,657.59 mi (9,105.02 km) |
| West Plains to Varna | 5,744.26 mi (9,244.50 km) |
