| Schwalmstadt to Karlovo | 930.63 mi (1,497.71 km) |
| Schwalmstadt to Karnobat | 1,013.41 mi (1,630.92 km) |
| Schwalmstadt to Kavarna | 1,032.09 mi (1,660.99 km) |
| Schwalmstadt to Kazanlak | 953.95 mi (1,535.23 km) |
| Schwalmstadt to Knezha | 863.71 mi (1,390.01 km) |
| Schwalmstadt to Kostinbrod | 864.49 mi (1,391.27 km) |
| Schwalmstadt to Kozloduy | 837.64 mi (1,348.05 km) |
| Schwalmstadt to Kyustendil | 872.58 mi (1,404.28 km) |
| Schwalmstadt to Levski | 909.45 mi (1,463.62 km) |
| Schwalmstadt to Lom | 817.19 mi (1,315.15 km) |
| Schwalmstadt to Lovech | 904.29 mi (1,455.32 km) |
| Schwalmstadt to Lukovit | 880.72 mi (1,417.38 km) |
| Schwalmstadt to Lyaskovets | 943.73 mi (1,518.79 km) |
| Schwalmstadt to Mezdra | 865.87 mi (1,393.48 km) |
| Schwalmstadt to Momchilgrad | 1,006.71 mi (1,620.14 km) |
