| Holyhead to Karlovo | 1,532.82 mi (2,466.84 km) |
| Holyhead to Karnobat | 1,619.84 mi (2,606.88 km) |
| Holyhead to Kavarna | 1,640.86 mi (2,640.71 km) |
| Holyhead to Kazanlak | 1,557.46 mi (2,506.49 km) |
| Holyhead to Knezha | 1,467.49 mi (2,361.70 km) |
| Holyhead to Kostinbrod | 1,462.68 mi (2,353.95 km) |
| Holyhead to Kozloduy | 1,441.70 mi (2,320.20 km) |
| Holyhead to Kyustendil | 1,465.61 mi (2,358.68 km) |
| Holyhead to Levski | 1,514.90 mi (2,437.99 km) |
| Holyhead to Lom | 1,420.25 mi (2,285.67 km) |
| Holyhead to Lovech | 1,508.14 mi (2,427.12 km) |
| Holyhead to Lukovit | 1,483.52 mi (2,387.50 km) |
| Holyhead to Lyaskovets | 1,549.41 mi (2,493.54 km) |
| Holyhead to Mezdra | 1,467.21 mi (2,361.25 km) |
| Holyhead to Momchilgrad | 1,605.96 mi (2,584.54 km) |
