| Neckargemund to Karlovo | 895.94 mi (1,441.87 km) |
| Neckargemund to Karnobat | 986.22 mi (1,587.17 km) |
| Neckargemund to Kavarna | 1,013.84 mi (1,631.61 km) |
| Neckargemund to Kazanlak | 921.25 mi (1,482.61 km) |
| Neckargemund to Knezha | 831.70 mi (1,338.50 km) |
| Neckargemund to Kostinbrod | 824.69 mi (1,327.21 km) |
| Neckargemund to Kozloduy | 806.22 mi (1,297.48 km) |
| Neckargemund to Kyustendil | 827.41 mi (1,331.59 km) |
| Neckargemund to Levski | 880.43 mi (1,416.91 km) |
| Neckargemund to Lom | 784.12 mi (1,261.93 km) |
| Neckargemund to Lovech | 872.28 mi (1,403.80 km) |
| Neckargemund to Lukovit | 847.06 mi (1,363.22 km) |
| Neckargemund to Lyaskovets | 915.08 mi (1,472.68 km) |
| Neckargemund to Mezdra | 830.09 mi (1,335.90 km) |
| Neckargemund to Momchilgrad | 968.03 mi (1,557.90 km) |
