| Highlands Ranch to Karlovo | 5,947.61 mi (9,571.75 km) |
| Highlands Ranch to Karnobat | 6,012.80 mi (9,676.67 km) |
| Highlands Ranch to Kavarna | 6,006.06 mi (9,665.81 km) |
| Highlands Ranch to Kazanlak | 5,966.93 mi (9,602.84 km) |
| Highlands Ranch to Knezha | 5,878.33 mi (9,460.26 km) |
| Highlands Ranch to Kostinbrod | 5,889.52 mi (9,478.27 km) |
| Highlands Ranch to Kozloduy | 5,852.16 mi (9,418.15 km) |
| Highlands Ranch to Kyustendil | 5,902.15 mi (9,498.59 km) |
| Highlands Ranch to Levski | 5,917.14 mi (9,522.72 km) |
| Highlands Ranch to Lom | 5,834.84 mi (9,390.27 km) |
| Highlands Ranch to Lovech | 5,917.62 mi (9,523.49 km) |
| Highlands Ranch to Lukovit | 5,897.42 mi (9,490.98 km) |
| Highlands Ranch to Lyaskovets | 5,949.33 mi (9,574.52 km) |
| Highlands Ranch to Mezdra | 5,886.02 mi (9,472.63 km) |
| Highlands Ranch to Momchilgrad | 6,027.96 mi (9,701.06 km) |
