| Rockville Centre to Karlovo | 4,762.69 mi (7,664.81 km) |
| Rockville Centre to Karnobat | 4,851.41 mi (7,807.59 km) |
| Rockville Centre to Kavarna | 4,871.35 mi (7,839.68 km) |
| Rockville Centre to Kazanlak | 4,787.98 mi (7,705.52 km) |
| Rockville Centre to Knezha | 4,698.28 mi (7,561.15 km) |
| Rockville Centre to Kostinbrod | 4,690.39 mi (7,548.45 km) |
| Rockville Centre to Kozloduy | 4,672.65 mi (7,519.90 km) |
| Rockville Centre to Kyustendil | 4,689.74 mi (7,547.41 km) |
| Rockville Centre to Levski | 4,746.26 mi (7,638.37 km) |
| Rockville Centre to Lom | 4,650.81 mi (7,484.75 km) |
| Rockville Centre to Lovech | 4,738.90 mi (7,626.52 km) |
| Rockville Centre to Lukovit | 4,713.83 mi (7,586.18 km) |
| Rockville Centre to Lyaskovets | 4,780.83 mi (7,694.00 km) |
| Rockville Centre to Mezdra | 4,696.80 mi (7,558.77 km) |
| Rockville Centre to Momchilgrad | 4,833.67 mi (7,779.04 km) |
