| Dundalk to Karlovo | 4,940.58 mi (7,951.10 km) |
| Dundalk to Karnobat | 5,028.88 mi (8,093.20 km) |
| Dundalk to Kavarna | 5,048.19 mi (8,124.28 km) |
| Dundalk to Kazanlak | 4,965.77 mi (7,991.64 km) |
| Dundalk to Knezha | 4,876.01 mi (7,847.18 km) |
| Dundalk to Kostinbrod | 4,868.50 mi (7,835.09 km) |
| Dundalk to Kozloduy | 4,850.34 mi (7,805.87 km) |
| Dundalk to Kyustendil | 4,868.09 mi (7,834.44 km) |
| Dundalk to Levski | 4,923.84 mi (7,924.15 km) |
| Dundalk to Lom | 4,828.58 mi (7,770.84 km) |
| Dundalk to Lovech | 4,916.64 mi (7,912.56 km) |
| Dundalk to Lukovit | 4,891.65 mi (7,872.35 km) |
| Dundalk to Lyaskovets | 4,958.38 mi (7,979.74 km) |
| Dundalk to Mezdra | 4,874.72 mi (7,845.10 km) |
| Dundalk to Momchilgrad | 5,011.80 mi (8,065.72 km) |
