| River Ridge to Karlovo | 5,946.24 mi (9,569.56 km) |
| River Ridge to Karnobat | 6,032.87 mi (9,708.97 km) |
| River Ridge to Kavarna | 6,049.65 mi (9,735.97 km) |
| River Ridge to Kazanlak | 5,971.05 mi (9,609.47 km) |
| River Ridge to Knezha | 5,881.09 mi (9,464.70 km) |
| River Ridge to Kostinbrod | 5,874.98 mi (9,454.87 km) |
| River Ridge to Kozloduy | 5,855.29 mi (9,423.18 km) |
| River Ridge to Kyustendil | 5,875.41 mi (9,455.56 km) |
| River Ridge to Levski | 5,928.30 mi (9,540.68 km) |
| River Ridge to Lom | 5,833.83 mi (9,388.64 km) |
| River Ridge to Lovech | 5,921.74 mi (9,530.12 km) |
| River Ridge to Lukovit | 5,897.06 mi (9,490.40 km) |
| River Ridge to Lyaskovets | 5,962.76 mi (9,596.14 km) |
| River Ridge to Mezdra | 5,880.51 mi (9,463.77 km) |
| River Ridge to Momchilgrad | 6,018.33 mi (9,685.57 km) |
