| Skien to Karlovo | 1,316.25 mi (2,118.30 km) |
| Skien to Karnobat | 1,364.85 mi (2,196.51 km) |
| Skien to Kavarna | 1,348.46 mi (2,170.13 km) |
| Skien to Kazanlak | 1,330.54 mi (2,141.30 km) |
| Skien to Knezha | 1,247.27 mi (2,007.28 km) |
| Skien to Kostinbrod | 1,273.16 mi (2,048.96 km) |
| Skien to Kozloduy | 1,222.21 mi (1,966.95 km) |
| Skien to Kyustendil | 1,297.28 mi (2,087.76 km) |
| Skien to Levski | 1,277.95 mi (2,056.66 km) |
| Skien to Lom | 1,209.46 mi (1,946.44 km) |
| Skien to Lovech | 1,283.51 mi (2,065.60 km) |
| Skien to Lukovit | 1,267.88 mi (2,040.45 km) |
| Skien to Lyaskovets | 1,307.35 mi (2,103.97 km) |
| Skien to Mezdra | 1,261.52 mi (2,030.22 km) |
| Skien to Momchilgrad | 1,399.04 mi (2,251.54 km) |
