| Durham to Karlovo | 1,452.04 mi (2,336.83 km) |
| Durham to Karnobat | 1,532.47 mi (2,466.27 km) |
| Durham to Kavarna | 1,546.14 mi (2,488.27 km) |
| Durham to Kazanlak | 1,474.93 mi (2,373.67 km) |
| Durham to Knezha | 1,384.71 mi (2,228.48 km) |
| Durham to Kostinbrod | 1,386.31 mi (2,231.05 km) |
| Durham to Kozloduy | 1,358.56 mi (2,186.39 km) |
| Durham to Kyustendil | 1,393.88 mi (2,243.23 km) |
| Durham to Levski | 1,429.52 mi (2,300.59 km) |
| Durham to Lom | 1,338.49 mi (2,154.09 km) |
| Durham to Lovech | 1,425.21 mi (2,293.65 km) |
| Durham to Lukovit | 1,402.02 mi (2,256.33 km) |
| Durham to Lyaskovets | 1,463.58 mi (2,355.40 km) |
| Durham to Mezdra | 1,387.49 mi (2,232.95 km) |
| Durham to Momchilgrad | 1,528.49 mi (2,459.86 km) |
