| Duncanville to Karlovo | 6,060.82 mi (9,753.95 km) |
| Duncanville to Karnobat | 6,139.63 mi (9,880.78 km) |
| Duncanville to Kavarna | 6,147.09 mi (9,892.78 km) |
| Duncanville to Kazanlak | 6,083.65 mi (9,790.69 km) |
| Duncanville to Knezha | 5,993.45 mi (9,645.52 km) |
| Duncanville to Kostinbrod | 5,994.19 mi (9,646.71 km) |
| Duncanville to Kozloduy | 5,967.28 mi (9,603.40 km) |
| Duncanville to Kyustendil | 5,999.46 mi (9,655.20 km) |
| Duncanville to Levski | 6,037.72 mi (9,716.76 km) |
| Duncanville to Lom | 5,947.28 mi (9,571.22 km) |
| Duncanville to Lovech | 6,033.91 mi (9,710.64 km) |
| Duncanville to Lukovit | 6,010.81 mi (9,673.46 km) |
| Duncanville to Lyaskovets | 6,071.56 mi (9,771.24 km) |
| Duncanville to Mezdra | 5,996.16 mi (9,649.89 km) |
| Duncanville to Momchilgrad | 6,136.83 mi (9,876.28 km) |
