| Missouri City to Smolyan | 6,219.07 mi (10,008.62 km) |
| Missouri City to Sofia | 6,115.52 mi (9,841.97 km) |
| Missouri City to Sopot | 6,172.35 mi (9,933.44 km) |
| Missouri City to Sozopol | 6,294.27 mi (10,129.65 km) |
| Missouri City to Sredets | 6,278.80 mi (10,104.76 km) |
| Missouri City to Stamboliyski | 6,187.57 mi (9,957.93 km) |
| Missouri City to Stara Zagora | 6,216.55 mi (10,004.57 km) |
| Missouri City to Svilengrad | 6,268.35 mi (10,087.93 km) |
| Missouri City to Svishtov | 6,150.74 mi (9,898.66 km) |
| Missouri City to Targovishte | 6,213.63 mi (9,999.87 km) |
| Missouri City to Teteven | 6,141.77 mi (9,884.23 km) |
| Missouri City to Troyan | 6,160.44 mi (9,914.28 km) |
| Missouri City to Tryavna | 6,190.88 mi (9,963.26 km) |
| Missouri City to Tutrakan | 6,177.47 mi (9,941.68 km) |
| Missouri City to Varna | 6,264.28 mi (10,081.39 km) |
