| Castelsarrasin to Karlovo | 1,190.71 mi (1,916.26 km) |
| Castelsarrasin to Karnobat | 1,298.66 mi (2,089.99 km) |
| Castelsarrasin to Kavarna | 1,353.64 mi (2,178.47 km) |
| Castelsarrasin to Kazanlak | 1,220.50 mi (1,964.20 km) |
| Castelsarrasin to Knezha | 1,143.27 mi (1,839.92 km) |
| Castelsarrasin to Kostinbrod | 1,109.30 mi (1,785.24 km) |
| Castelsarrasin to Kozloduy | 1,122.83 mi (1,807.02 km) |
| Castelsarrasin to Kyustendil | 1,091.01 mi (1,755.81 km) |
| Castelsarrasin to Levski | 1,196.75 mi (1,925.98 km) |
| Castelsarrasin to Lom | 1,097.95 mi (1,766.98 km) |
| Castelsarrasin to Lovech | 1,179.21 mi (1,897.75 km) |
| Castelsarrasin to Lukovit | 1,151.12 mi (1,852.54 km) |
| Castelsarrasin to Lyaskovets | 1,229.10 mi (1,978.05 km) |
| Castelsarrasin to Mezdra | 1,128.68 mi (1,816.43 km) |
| Castelsarrasin to Momchilgrad | 1,240.17 mi (1,995.86 km) |
