| Great Falls to Karlovo | 5,656.86 mi (9,103.84 km) |
| Great Falls to Karnobat | 5,708.73 mi (9,187.32 km) |
| Great Falls to Kavarna | 5,689.81 mi (9,156.86 km) |
| Great Falls to Kazanlak | 5,672.68 mi (9,129.30 km) |
| Great Falls to Knezha | 5,587.43 mi (8,992.10 km) |
| Great Falls to Kostinbrod | 5,607.60 mi (9,024.56 km) |
| Great Falls to Kozloduy | 5,561.84 mi (8,950.92 km) |
| Great Falls to Kyustendil | 5,626.45 mi (9,054.89 km) |
| Great Falls to Levski | 5,620.60 mi (9,045.48 km) |
| Great Falls to Lom | 5,547.27 mi (8,927.46 km) |
| Great Falls to Lovech | 5,624.82 mi (9,052.28 km) |
| Great Falls to Lukovit | 5,607.63 mi (9,024.60 km) |
| Great Falls to Lyaskovets | 5,650.63 mi (9,093.81 km) |
| Great Falls to Mezdra | 5,599.33 mi (9,011.25 km) |
| Great Falls to Momchilgrad | 5,739.27 mi (9,236.46 km) |
