| Carlow to Karlovo | 1,616.58 mi (2,601.64 km) |
| Carlow to Karnobat | 1,705.92 mi (2,745.41 km) |
| Carlow to Kavarna | 1,729.58 mi (2,783.49 km) |
| Carlow to Kazanlak | 1,641.84 mi (2,642.28 km) |
| Carlow to Knezha | 1,552.18 mi (2,497.99 km) |
| Carlow to Kostinbrod | 1,544.89 mi (2,486.26 km) |
| Carlow to Kozloduy | 1,526.59 mi (2,456.81 km) |
| Carlow to Kyustendil | 1,545.96 mi (2,487.98 km) |
| Carlow to Levski | 1,600.45 mi (2,575.68 km) |
| Carlow to Lom | 1,504.67 mi (2,421.53 km) |
| Carlow to Lovech | 1,592.78 mi (2,563.34 km) |
| Carlow to Lukovit | 1,567.68 mi (2,522.94 km) |
| Carlow to Lyaskovets | 1,635.06 mi (2,631.38 km) |
| Carlow to Mezdra | 1,550.73 mi (2,495.65 km) |
| Carlow to Momchilgrad | 1,688.24 mi (2,716.96 km) |
