| Sierra Vista to Karlovo | 6,573.34 mi (10,578.78 km) |
| Sierra Vista to Karnobat | 6,639.45 mi (10,685.16 km) |
| Sierra Vista to Kavarna | 6,633.28 mi (10,675.23 km) |
| Sierra Vista to Kazanlak | 6,592.93 mi (10,610.30 km) |
| Sierra Vista to Knezha | 6,504.14 mi (10,467.41 km) |
| Sierra Vista to Kostinbrod | 6,514.51 mi (10,484.10 km) |
| Sierra Vista to Kozloduy | 6,477.95 mi (10,425.26 km) |
| Sierra Vista to Kyustendil | 6,526.47 mi (10,503.34 km) |
| Sierra Vista to Levski | 6,543.35 mi (10,530.51 km) |
| Sierra Vista to Lom | 6,460.42 mi (10,397.03 km) |
| Sierra Vista to Lovech | 6,543.55 mi (10,530.82 km) |
| Sierra Vista to Lukovit | 6,523.12 mi (10,497.95 km) |
| Sierra Vista to Lyaskovets | 6,575.67 mi (10,582.51 km) |
| Sierra Vista to Mezdra | 6,511.46 mi (10,479.18 km) |
| Sierra Vista to Momchilgrad | 6,653.44 mi (10,707.68 km) |
