| Niort to Karlovo | 1,265.54 mi (2,036.70 km) |
| Niort to Karnobat | 1,369.58 mi (2,204.12 km) |
| Niort to Kavarna | 1,415.83 mi (2,278.56 km) |
| Niort to Kazanlak | 1,294.45 mi (2,083.22 km) |
| Niort to Knezha | 1,211.68 mi (1,950.01 km) |
| Niort to Kostinbrod | 1,185.64 mi (1,908.10 km) |
| Niort to Kozloduy | 1,189.13 mi (1,913.72 km) |
| Niort to Kyustendil | 1,173.35 mi (1,888.33 km) |
| Niort to Levski | 1,264.63 mi (2,035.22 km) |
| Niort to Lom | 1,164.62 mi (1,874.28 km) |
| Niort to Lovech | 1,249.87 mi (2,011.48 km) |
| Niort to Lukovit | 1,222.16 mi (1,966.88 km) |
| Niort to Lyaskovets | 1,298.34 mi (2,089.47 km) |
| Niort to Mezdra | 1,201.01 mi (1,932.84 km) |
| Niort to Momchilgrad | 1,323.03 mi (2,129.22 km) |
