| Colonia to Karlovo | 4,793.40 mi (7,714.23 km) |
| Colonia to Karnobat | 4,881.78 mi (7,856.47 km) |
| Colonia to Kavarna | 4,901.28 mi (7,887.85 km) |
| Colonia to Kazanlak | 4,818.61 mi (7,754.80 km) |
| Colonia to Knezha | 4,728.86 mi (7,610.36 km) |
| Colonia to Kostinbrod | 4,721.29 mi (7,598.18 km) |
| Colonia to Kozloduy | 4,703.20 mi (7,569.06 km) |
| Colonia to Kyustendil | 4,720.86 mi (7,597.50 km) |
| Colonia to Levski | 4,776.72 mi (7,687.39 km) |
| Colonia to Lom | 4,681.42 mi (7,534.01 km) |
| Colonia to Lovech | 4,769.48 mi (7,675.74 km) |
| Colonia to Lukovit | 4,744.48 mi (7,635.50 km) |
| Colonia to Lyaskovets | 4,811.27 mi (7,742.99 km) |
| Colonia to Mezdra | 4,727.53 mi (7,608.23 km) |
| Colonia to Momchilgrad | 4,864.59 mi (7,828.80 km) |
