| Boynton Beach to Karlovo | 5,688.44 mi (9,154.67 km) |
| Boynton Beach to Karnobat | 5,784.64 mi (9,309.49 km) |
| Boynton Beach to Kavarna | 5,814.58 mi (9,357.67 km) |
| Boynton Beach to Kazanlak | 5,715.60 mi (9,198.37 km) |
| Boynton Beach to Knezha | 5,627.82 mi (9,057.10 km) |
| Boynton Beach to Kostinbrod | 5,611.92 mi (9,031.51 km) |
| Boynton Beach to Kozloduy | 5,603.09 mi (9,017.30 km) |
| Boynton Beach to Kyustendil | 5,605.33 mi (9,020.90 km) |
| Boynton Beach to Levski | 5,678.35 mi (9,138.43 km) |
| Boynton Beach to Lom | 5,579.93 mi (8,980.03 km) |
| Boynton Beach to Lovech | 5,667.92 mi (9,121.63 km) |
| Boynton Beach to Lukovit | 5,641.46 mi (9,079.05 km) |
| Boynton Beach to Lyaskovets | 5,712.99 mi (9,194.17 km) |
| Boynton Beach to Mezdra | 5,622.47 mi (9,048.50 km) |
| Boynton Beach to Momchilgrad | 5,753.42 mi (9,259.24 km) |
