| Bougival to Karlovo | 1,168.78 mi (1,880.98 km) |
| Bougival to Karnobat | 1,265.96 mi (2,037.37 km) |
| Bougival to Kavarna | 1,301.37 mi (2,094.36 km) |
| Bougival to Kazanlak | 1,195.98 mi (1,924.74 km) |
| Bougival to Knezha | 1,108.56 mi (1,784.05 km) |
| Bougival to Kostinbrod | 1,092.67 mi (1,758.48 km) |
| Bougival to Kozloduy | 1,084.11 mi (1,744.70 km) |
| Bougival to Kyustendil | 1,088.18 mi (1,751.25 km) |
| Bougival to Levski | 1,159.64 mi (1,866.25 km) |
| Bougival to Lom | 1,060.68 mi (1,707.00 km) |
| Bougival to Lovech | 1,148.49 mi (1,848.32 km) |
| Bougival to Lukovit | 1,121.89 mi (1,805.50 km) |
| Bougival to Lyaskovets | 1,194.19 mi (1,921.86 km) |
| Bougival to Mezdra | 1,102.81 mi (1,774.80 km) |
| Bougival to Momchilgrad | 1,234.88 mi (1,987.34 km) |
