| Boerne to Karlovo | 6,282.49 mi (10,110.69 km) |
| Boerne to Karnobat | 6,362.01 mi (10,238.66 km) |
| Boerne to Kavarna | 6,370.15 mi (10,251.77 km) |
| Boerne to Kazanlak | 6,305.51 mi (10,147.73 km) |
| Boerne to Knezha | 6,215.28 mi (10,002.53 km) |
| Boerne to Kostinbrod | 6,215.39 mi (10,002.70 km) |
| Boerne to Kozloduy | 6,189.13 mi (9,960.45 km) |
| Boerne to Kyustendil | 6,220.18 mi (10,010.41 km) |
| Boerne to Levski | 6,259.83 mi (10,074.22 km) |
| Boerne to Lom | 6,169.00 mi (9,928.04 km) |
| Boerne to Lovech | 6,255.78 mi (10,067.71 km) |
| Boerne to Lukovit | 6,232.53 mi (10,030.28 km) |
| Boerne to Lyaskovets | 6,293.74 mi (10,128.80 km) |
| Boerne to Mezdra | 6,217.70 mi (10,006.43 km) |
| Boerne to Momchilgrad | 6,358.17 mi (10,232.49 km) |
