| Darlington to Karlovo | 1,444.28 mi (2,324.34 km) |
| Darlington to Karnobat | 1,525.52 mi (2,455.08 km) |
| Darlington to Kavarna | 1,540.11 mi (2,478.57 km) |
| Darlington to Kazanlak | 1,467.38 mi (2,361.52 km) |
| Darlington to Knezha | 1,377.15 mi (2,216.30 km) |
| Darlington to Kostinbrod | 1,378.02 mi (2,217.71 km) |
| Darlington to Kozloduy | 1,351.03 mi (2,174.27 km) |
| Darlington to Kyustendil | 1,385.09 mi (2,229.08 km) |
| Darlington to Levski | 1,422.28 mi (2,288.94 km) |
| Darlington to Lom | 1,330.78 mi (2,141.69 km) |
| Darlington to Lovech | 1,417.68 mi (2,281.54 km) |
| Darlington to Lukovit | 1,394.31 mi (2,243.93 km) |
| Darlington to Lyaskovets | 1,456.41 mi (2,343.87 km) |
| Darlington to Mezdra | 1,379.58 mi (2,220.21 km) |
| Darlington to Momchilgrad | 1,520.38 mi (2,446.82 km) |
