| Cedar Rapids to Smolyan | 5,434.53 mi (8,746.04 km) |
| Cedar Rapids to Sofia | 5,330.25 mi (8,578.20 km) |
| Cedar Rapids to Sopot | 5,382.25 mi (8,661.89 km) |
| Cedar Rapids to Sozopol | 5,494.85 mi (8,843.10 km) |
| Cedar Rapids to Sredets | 5,481.44 mi (8,821.53 km) |
| Cedar Rapids to Stamboliyski | 5,400.85 mi (8,691.83 km) |
| Cedar Rapids to Stara Zagora | 5,424.30 mi (8,729.57 km) |
| Cedar Rapids to Svilengrad | 5,477.37 mi (8,814.97 km) |
| Cedar Rapids to Svishtov | 5,353.82 mi (8,616.14 km) |
| Cedar Rapids to Targovishte | 5,414.23 mi (8,713.36 km) |
| Cedar Rapids to Teteven | 5,352.05 mi (8,613.29 km) |
| Cedar Rapids to Troyan | 5,369.30 mi (8,641.05 km) |
| Cedar Rapids to Tryavna | 5,397.05 mi (8,685.72 km) |
| Cedar Rapids to Tutrakan | 5,374.27 mi (8,649.06 km) |
| Cedar Rapids to Varna | 5,460.49 mi (8,787.81 km) |
