| Cedar Rapids to Karlovo | 5,384.55 mi (8,665.60 km) |
| Cedar Rapids to Karnobat | 5,459.48 mi (8,786.18 km) |
| Cedar Rapids to Kavarna | 5,462.97 mi (8,791.81 km) |
| Cedar Rapids to Kazanlak | 5,406.36 mi (8,700.70 km) |
| Cedar Rapids to Knezha | 5,316.40 mi (8,555.91 km) |
| Cedar Rapids to Kostinbrod | 5,320.45 mi (8,562.43 km) |
| Cedar Rapids to Kozloduy | 5,290.15 mi (8,513.68 km) |
| Cedar Rapids to Kyustendil | 5,328.17 mi (8,574.86 km) |
| Cedar Rapids to Levski | 5,359.13 mi (8,624.68 km) |
| Cedar Rapids to Lom | 5,270.93 mi (8,482.74 km) |
| Cedar Rapids to Lovech | 5,356.61 mi (8,620.63 km) |
| Cedar Rapids to Lukovit | 5,334.34 mi (8,584.79 km) |
| Cedar Rapids to Lyaskovets | 5,392.57 mi (8,678.51 km) |
| Cedar Rapids to Mezdra | 5,320.67 mi (8,562.80 km) |
| Cedar Rapids to Momchilgrad | 5,462.16 mi (8,790.49 km) |
