| Isbergues to Karlovo | 1,188.66 mi (1,912.97 km) |
| Isbergues to Karnobat | 1,280.05 mi (2,060.04 km) |
| Isbergues to Kavarna | 1,307.57 mi (2,104.34 km) |
| Isbergues to Kazanlak | 1,214.36 mi (1,954.33 km) |
| Isbergues to Knezha | 1,125.07 mi (1,810.63 km) |
| Isbergues to Kostinbrod | 1,116.13 mi (1,796.24 km) |
| Isbergues to Kozloduy | 1,099.71 mi (1,769.81 km) |
| Isbergues to Kyustendil | 1,116.66 mi (1,797.08 km) |
| Isbergues to Levski | 1,174.15 mi (1,889.60 km) |
| Isbergues to Lom | 1,077.39 mi (1,733.89 km) |
| Isbergues to Lovech | 1,165.59 mi (1,875.84 km) |
| Isbergues to Lukovit | 1,140.11 mi (1,834.83 km) |
| Isbergues to Lyaskovets | 1,208.81 mi (1,945.39 km) |
| Isbergues to Mezdra | 1,122.69 mi (1,806.80 km) |
| Isbergues to Momchilgrad | 1,259.45 mi (2,026.88 km) |
