| Castanet-Tolosan to Karlovo | 1,174.01 mi (1,889.39 km) |
| Castanet-Tolosan to Karnobat | 1,282.66 mi (2,064.24 km) |
| Castanet-Tolosan to Kavarna | 1,339.64 mi (2,155.94 km) |
| Castanet-Tolosan to Kazanlak | 1,203.95 mi (1,937.56 km) |
| Castanet-Tolosan to Knezha | 1,128.29 mi (1,815.81 km) |
| Castanet-Tolosan to Kostinbrod | 1,092.46 mi (1,758.14 km) |
| Castanet-Tolosan to Kozloduy | 1,108.44 mi (1,783.86 km) |
| Castanet-Tolosan to Kyustendil | 1,072.73 mi (1,726.40 km) |
| Castanet-Tolosan to Levski | 1,181.75 mi (1,901.85 km) |
| Castanet-Tolosan to Lom | 1,083.54 mi (1,743.79 km) |
| Castanet-Tolosan to Lovech | 1,163.57 mi (1,872.59 km) |
| Castanet-Tolosan to Lukovit | 1,135.47 mi (1,827.36 km) |
| Castanet-Tolosan to Lyaskovets | 1,213.69 mi (1,953.24 km) |
| Castanet-Tolosan to Mezdra | 1,112.77 mi (1,790.83 km) |
| Castanet-Tolosan to Momchilgrad | 1,221.37 mi (1,965.61 km) |
