| Lake Butler to Karlovo | 5,658.08 mi (9,105.80 km) |
| Lake Butler to Karnobat | 5,751.99 mi (9,256.93 km) |
| Lake Butler to Kavarna | 5,778.58 mi (9,299.72 km) |
| Lake Butler to Kazanlak | 5,684.68 mi (9,148.61 km) |
| Lake Butler to Knezha | 5,596.12 mi (9,006.09 km) |
| Lake Butler to Kostinbrod | 5,582.77 mi (8,984.60 km) |
| Lake Butler to Kozloduy | 5,571.05 mi (8,965.74 km) |
| Lake Butler to Kyustendil | 5,578.04 mi (8,976.99 km) |
| Lake Butler to Levski | 5,645.90 mi (9,086.20 km) |
| Lake Butler to Lom | 5,548.29 mi (8,929.10 km) |
| Lake Butler to Lovech | 5,636.46 mi (9,071.00 km) |
| Lake Butler to Lukovit | 5,610.41 mi (9,029.07 km) |
| Lake Butler to Lyaskovets | 5,680.57 mi (9,141.99 km) |
| Lake Butler to Mezdra | 5,592.02 mi (8,999.49 km) |
| Lake Butler to Momchilgrad | 5,725.10 mi (9,213.65 km) |
