| Radstock to Karlovo | 1,406.37 mi (2,263.34 km) |
| Radstock to Karnobat | 1,498.32 mi (2,411.31 km) |
| Radstock to Kavarna | 1,525.84 mi (2,455.61 km) |
| Radstock to Kazanlak | 1,432.27 mi (2,305.01 km) |
| Radstock to Knezha | 1,343.11 mi (2,161.53 km) |
| Radstock to Kostinbrod | 1,333.24 mi (2,145.64 km) |
| Radstock to Kozloduy | 1,317.82 mi (2,120.82 km) |
| Radstock to Kyustendil | 1,332.71 mi (2,144.79 km) |
| Radstock to Levski | 1,392.36 mi (2,240.79 km) |
| Radstock to Lom | 1,295.39 mi (2,084.72 km) |
| Radstock to Lovech | 1,383.60 mi (2,226.69 km) |
| Radstock to Lukovit | 1,357.99 mi (2,185.47 km) |
| Radstock to Lyaskovets | 1,427.03 mi (2,296.58 km) |
| Radstock to Mezdra | 1,340.36 mi (2,157.10 km) |
| Radstock to Momchilgrad | 1,476.47 mi (2,376.15 km) |
