| Hardinxveld-Giessendam to Karlovo | 1,125.46 mi (1,811.26 km) |
| Hardinxveld-Giessendam to Karnobat | 1,210.43 mi (1,948.00 km) |
| Hardinxveld-Giessendam to Kavarna | 1,230.47 mi (1,980.25 km) |
| Hardinxveld-Giessendam to Kazanlak | 1,149.45 mi (1,849.87 km) |
| Hardinxveld-Giessendam to Knezha | 1,059.30 mi (1,704.78 km) |
| Hardinxveld-Giessendam to Kostinbrod | 1,057.28 mi (1,701.52 km) |
| Hardinxveld-Giessendam to Kozloduy | 1,033.36 mi (1,663.02 km) |
| Hardinxveld-Giessendam to Kyustendil | 1,062.87 mi (1,710.52 km) |
| Hardinxveld-Giessendam to Levski | 1,105.92 mi (1,779.81 km) |
| Hardinxveld-Giessendam to Lom | 1,012.37 mi (1,629.26 km) |
| Hardinxveld-Giessendam to Lovech | 1,099.94 mi (1,770.18 km) |
| Hardinxveld-Giessendam to Lukovit | 1,075.82 mi (1,731.37 km) |
| Hardinxveld-Giessendam to Lyaskovets | 1,140.34 mi (1,835.20 km) |
| Hardinxveld-Giessendam to Mezdra | 1,060.22 mi (1,706.26 km) |
| Hardinxveld-Giessendam to Momchilgrad | 1,200.17 mi (1,931.48 km) |
