| Rheinberg to Karlovo | 1,049.71 mi (1,689.34 km) |
| Rheinberg to Karnobat | 1,133.65 mi (1,824.43 km) |
| Rheinberg to Kavarna | 1,152.90 mi (1,855.41 km) |
| Rheinberg to Kazanlak | 1,073.40 mi (1,727.46 km) |
| Rheinberg to Knezha | 983.19 mi (1,582.29 km) |
| Rheinberg to Kostinbrod | 982.40 mi (1,581.03 km) |
| Rheinberg to Kozloduy | 957.18 mi (1,540.44 km) |
| Rheinberg to Kyustendil | 989.05 mi (1,591.72 km) |
| Rheinberg to Levski | 1,029.40 mi (1,656.66 km) |
| Rheinberg to Lom | 936.44 mi (1,507.06 km) |
| Rheinberg to Lovech | 1,023.81 mi (1,647.66 km) |
| Rheinberg to Lukovit | 999.94 mi (1,609.24 km) |
| Rheinberg to Lyaskovets | 1,063.76 mi (1,711.95 km) |
| Rheinberg to Mezdra | 984.67 mi (1,584.67 km) |
| Rheinberg to Momchilgrad | 1,125.04 mi (1,810.57 km) |
