| Berthoud to Karlovo | 5,906.20 mi (9,505.11 km) |
| Berthoud to Karnobat | 5,970.65 mi (9,608.84 km) |
| Berthoud to Kavarna | 5,963.20 mi (9,596.85 km) |
| Berthoud to Kazanlak | 5,925.32 mi (9,535.89 km) |
| Berthoud to Knezha | 5,836.87 mi (9,393.54 km) |
| Berthoud to Kostinbrod | 5,848.60 mi (9,412.41 km) |
| Berthoud to Kozloduy | 5,810.72 mi (9,351.46 km) |
| Berthoud to Kyustendil | 5,861.60 mi (9,433.33 km) |
| Berthoud to Levski | 5,875.37 mi (9,455.50 km) |
| Berthoud to Lom | 5,793.55 mi (9,323.83 km) |
| Berthoud to Lovech | 5,876.07 mi (9,456.62 km) |
| Berthoud to Lukovit | 5,856.04 mi (9,424.38 km) |
| Berthoud to Lyaskovets | 5,907.45 mi (9,507.13 km) |
| Berthoud to Mezdra | 5,844.81 mi (9,406.32 km) |
| Berthoud to Momchilgrad | 5,986.72 mi (9,634.69 km) |
