| West Des Moines to Smolyan | 5,528.83 mi (8,897.78 km) |
| West Des Moines to Sofia | 5,424.52 mi (8,729.93 km) |
| West Des Moines to Sopot | 5,475.73 mi (8,812.33 km) |
| West Des Moines to Sozopol | 5,586.68 mi (8,990.89 km) |
| West Des Moines to Sredets | 5,573.64 mi (8,969.91 km) |
| West Des Moines to Stamboliyski | 5,494.84 mi (8,843.09 km) |
| West Des Moines to Stara Zagora | 5,517.40 mi (8,879.40 km) |
| West Des Moines to Svilengrad | 5,570.62 mi (8,965.04 km) |
| West Des Moines to Svishtov | 5,446.21 mi (8,764.83 km) |
| West Des Moines to Targovishte | 5,506.14 mi (8,861.27 km) |
| West Des Moines to Teteven | 5,445.62 mi (8,763.88 km) |
| West Des Moines to Troyan | 5,462.62 mi (8,791.24 km) |
| West Des Moines to Tryavna | 5,489.92 mi (8,835.17 km) |
| West Des Moines to Tutrakan | 5,465.56 mi (8,795.96 km) |
| West Des Moines to Varna | 5,551.59 mi (8,934.42 km) |
