| Prudhoe to Karlovo | 1,467.29 mi (2,361.38 km) |
| Prudhoe to Karnobat | 1,547.33 mi (2,490.19 km) |
| Prudhoe to Kavarna | 1,560.52 mi (2,511.41 km) |
| Prudhoe to Kazanlak | 1,490.08 mi (2,398.06 km) |
| Prudhoe to Knezha | 1,399.87 mi (2,252.88 km) |
| Prudhoe to Kostinbrod | 1,401.80 mi (2,255.98 km) |
| Prudhoe to Kozloduy | 1,373.71 mi (2,210.77 km) |
| Prudhoe to Kyustendil | 1,409.57 mi (2,268.49 km) |
| Prudhoe to Levski | 1,444.52 mi (2,324.73 km) |
| Prudhoe to Lom | 1,353.72 mi (2,178.60 km) |
| Prudhoe to Lovech | 1,440.35 mi (2,318.02 km) |
| Prudhoe to Lukovit | 1,417.24 mi (2,280.83 km) |
| Prudhoe to Lyaskovets | 1,478.54 mi (2,379.49 km) |
| Prudhoe to Mezdra | 1,402.81 mi (2,257.61 km) |
| Prudhoe to Momchilgrad | 1,543.89 mi (2,484.65 km) |
