| Elk River to Karlovo | 5,275.10 mi (8,489.45 km) |
| Elk River to Karnobat | 5,345.17 mi (8,602.22 km) |
| Elk River to Kavarna | 5,343.64 mi (8,599.76 km) |
| Elk River to Kazanlak | 5,295.65 mi (8,522.53 km) |
| Elk River to Knezha | 5,206.25 mi (8,378.65 km) |
| Elk River to Kostinbrod | 5,214.07 mi (8,391.24 km) |
| Elk River to Kozloduy | 5,180.00 mi (8,336.41 km) |
| Elk River to Kyustendil | 5,224.45 mi (8,407.95 km) |
| Elk River to Levski | 5,247.03 mi (8,444.28 km) |
| Elk River to Lom | 5,161.74 mi (8,307.02 km) |
| Elk River to Lovech | 5,246.05 mi (8,442.70 km) |
| Elk River to Lukovit | 5,224.82 mi (8,408.53 km) |
| Elk River to Lyaskovets | 5,279.89 mi (8,497.16 km) |
| Elk River to Mezdra | 5,212.32 mi (8,388.42 km) |
| Elk River to Momchilgrad | 5,354.26 mi (8,616.85 km) |
