| River Falls to Karlovo | 5,268.51 mi (8,478.84 km) |
| River Falls to Karnobat | 5,339.82 mi (8,593.60 km) |
| River Falls to Kavarna | 5,339.56 mi (8,593.19 km) |
| River Falls to Kazanlak | 5,289.38 mi (8,512.43 km) |
| River Falls to Knezha | 5,199.81 mi (8,368.28 km) |
| River Falls to Kostinbrod | 5,206.70 mi (8,379.37 km) |
| River Falls to Kozloduy | 5,173.55 mi (8,326.03 km) |
| River Falls to Kyustendil | 5,216.43 mi (8,395.03 km) |
| River Falls to Levski | 5,241.09 mi (8,434.72 km) |
| River Falls to Lom | 5,155.05 mi (8,296.25 km) |
| River Falls to Lovech | 5,239.72 mi (8,432.52 km) |
| River Falls to Lukovit | 5,218.23 mi (8,397.93 km) |
| River Falls to Lyaskovets | 5,274.10 mi (8,487.85 km) |
| River Falls to Mezdra | 5,205.43 mi (8,377.34 km) |
| River Falls to Momchilgrad | 5,347.31 mi (8,605.66 km) |
