| Marshalltown to Karlovo | 5,423.25 mi (8,727.88 km) |
| Marshalltown to Karnobat | 5,497.11 mi (8,846.74 km) |
| Marshalltown to Kavarna | 5,499.45 mi (8,850.51 km) |
| Marshalltown to Kazanlak | 5,444.79 mi (8,762.54 km) |
| Marshalltown to Knezha | 5,354.92 mi (8,617.91 km) |
| Marshalltown to Kostinbrod | 5,359.80 mi (8,625.77 km) |
| Marshalltown to Kozloduy | 5,328.67 mi (8,575.66 km) |
| Marshalltown to Kyustendil | 5,368.10 mi (8,639.12 km) |
| Marshalltown to Levski | 5,397.23 mi (8,686.00 km) |
| Marshalltown to Lom | 5,309.65 mi (8,545.06 km) |
| Marshalltown to Lovech | 5,395.05 mi (8,682.50 km) |
| Marshalltown to Lukovit | 5,373.01 mi (8,647.02 km) |
| Marshalltown to Lyaskovets | 5,430.55 mi (8,739.63 km) |
| Marshalltown to Mezdra | 5,359.59 mi (8,625.43 km) |
| Marshalltown to Momchilgrad | 5,501.22 mi (8,853.36 km) |
