| Alfter to Karlovo | 1,007.93 mi (1,622.11 km) |
| Alfter to Karnobat | 1,094.71 mi (1,761.76 km) |
| Alfter to Kavarna | 1,117.45 mi (1,798.37 km) |
| Alfter to Kazanlak | 1,032.36 mi (1,661.42 km) |
| Alfter to Knezha | 942.33 mi (1,516.54 km) |
| Alfter to Kostinbrod | 938.79 mi (1,510.83 km) |
| Alfter to Kozloduy | 916.51 mi (1,474.98 km) |
| Alfter to Kyustendil | 943.61 mi (1,518.59 km) |
| Alfter to Levski | 989.68 mi (1,592.74 km) |
| Alfter to Lom | 895.16 mi (1,440.62 km) |
| Alfter to Lovech | 982.98 mi (1,581.96 km) |
| Alfter to Lukovit | 958.50 mi (1,542.55 km) |
| Alfter to Lyaskovets | 1,024.20 mi (1,648.30 km) |
| Alfter to Mezdra | 942.46 mi (1,516.74 km) |
| Alfter to Momchilgrad | 1,081.87 mi (1,741.10 km) |
