| Portet-sur-Garonne to Karlovo | 1,178.56 mi (1,896.71 km) |
| Portet-sur-Garonne to Karnobat | 1,287.20 mi (2,071.54 km) |
| Portet-sur-Garonne to Kavarna | 1,344.12 mi (2,163.16 km) |
| Portet-sur-Garonne to Kazanlak | 1,208.50 mi (1,944.89 km) |
| Portet-sur-Garonne to Knezha | 1,132.80 mi (1,823.07 km) |
| Portet-sur-Garonne to Kostinbrod | 1,097.01 mi (1,765.47 km) |
| Portet-sur-Garonne to Kozloduy | 1,112.93 mi (1,791.08 km) |
| Portet-sur-Garonne to Kyustendil | 1,077.32 mi (1,733.77 km) |
| Portet-sur-Garonne to Levski | 1,186.26 mi (1,909.10 km) |
| Portet-sur-Garonne to Lom | 1,088.03 mi (1,751.02 km) |
| Portet-sur-Garonne to Lovech | 1,168.10 mi (1,879.87 km) |
| Portet-sur-Garonne to Lukovit | 1,139.99 mi (1,834.64 km) |
| Portet-sur-Garonne to Lyaskovets | 1,218.21 mi (1,960.52 km) |
| Portet-sur-Garonne to Mezdra | 1,117.30 mi (1,798.13 km) |
| Portet-sur-Garonne to Momchilgrad | 1,225.97 mi (1,973.00 km) |
