| Issoire to Karlovo | 1,084.94 mi (1,746.05 km) |
| Issoire to Karnobat | 1,190.39 mi (1,915.75 km) |
| Issoire to Kavarna | 1,239.86 mi (1,995.37 km) |
| Issoire to Kazanlak | 1,114.17 mi (1,793.09 km) |
| Issoire to Knezha | 1,033.04 mi (1,662.52 km) |
| Issoire to Kostinbrod | 1,004.44 mi (1,616.49 km) |
| Issoire to Kozloduy | 1,011.17 mi (1,627.33 km) |
| Issoire to Kyustendil | 990.55 mi (1,594.14 km) |
| Issoire to Levski | 1,086.28 mi (1,748.20 km) |
| Issoire to Lom | 986.48 mi (1,587.58 km) |
| Issoire to Lovech | 1,070.56 mi (1,722.89 km) |
| Issoire to Lukovit | 1,042.66 mi (1,678.00 km) |
| Issoire to Lyaskovets | 1,119.59 mi (1,801.81 km) |
| Issoire to Mezdra | 1,021.06 mi (1,643.23 km) |
| Issoire to Momchilgrad | 1,140.34 mi (1,835.20 km) |
