| Holbrook to Karlovo | 4,733.83 mi (7,618.37 km) |
| Holbrook to Karnobat | 4,822.76 mi (7,761.48 km) |
| Holbrook to Kavarna | 4,842.99 mi (7,794.03 km) |
| Holbrook to Kazanlak | 4,759.17 mi (7,659.15 km) |
| Holbrook to Knezha | 4,669.50 mi (7,514.84 km) |
| Holbrook to Kostinbrod | 4,661.41 mi (7,501.82 km) |
| Holbrook to Kozloduy | 4,643.89 mi (7,473.62 km) |
| Holbrook to Kyustendil | 4,660.63 mi (7,500.56 km) |
| Holbrook to Levski | 4,717.56 mi (7,592.18 km) |
| Holbrook to Lom | 4,622.01 mi (7,438.41 km) |
| Holbrook to Lovech | 4,710.12 mi (7,580.20 km) |
| Holbrook to Lukovit | 4,685.01 mi (7,539.79 km) |
| Holbrook to Lyaskovets | 4,752.13 mi (7,647.82 km) |
| Holbrook to Mezdra | 4,667.92 mi (7,512.30 km) |
| Holbrook to Momchilgrad | 4,804.68 mi (7,732.38 km) |
