| Darwen to Karlovo | 1,456.81 mi (2,344.51 km) |
| Darwen to Karnobat | 1,541.40 mi (2,480.64 km) |
| Darwen to Kavarna | 1,559.76 mi (2,510.19 km) |
| Darwen to Kazanlak | 1,480.80 mi (2,383.11 km) |
| Darwen to Knezha | 1,390.63 mi (2,238.01 km) |
| Darwen to Kostinbrod | 1,388.33 mi (2,234.29 km) |
| Darwen to Kozloduy | 1,364.68 mi (2,196.23 km) |
| Darwen to Kyustendil | 1,393.14 mi (2,242.04 km) |
| Darwen to Levski | 1,437.10 mi (2,312.79 km) |
| Darwen to Lom | 1,343.73 mi (2,162.52 km) |
| Darwen to Lovech | 1,431.27 mi (2,303.40 km) |
| Darwen to Lukovit | 1,407.17 mi (2,264.63 km) |
| Darwen to Lyaskovets | 1,471.48 mi (2,368.12 km) |
| Darwen to Mezdra | 1,391.54 mi (2,239.47 km) |
| Darwen to Momchilgrad | 1,531.33 mi (2,464.43 km) |
