| Sigmaringen to Karlovo | 843.03 mi (1,356.72 km) |
| Sigmaringen to Karnobat | 938.43 mi (1,510.26 km) |
| Sigmaringen to Kavarna | 972.91 mi (1,565.75 km) |
| Sigmaringen to Kazanlak | 869.67 mi (1,399.60 km) |
| Sigmaringen to Knezha | 781.52 mi (1,257.73 km) |
| Sigmaringen to Kostinbrod | 768.49 mi (1,236.76 km) |
| Sigmaringen to Kozloduy | 756.78 mi (1,217.91 km) |
| Sigmaringen to Kyustendil | 767.07 mi (1,234.48 km) |
| Sigmaringen to Levski | 832.11 mi (1,339.15 km) |
| Sigmaringen to Lom | 733.64 mi (1,180.67 km) |
| Sigmaringen to Lovech | 821.69 mi (1,322.38 km) |
| Sigmaringen to Lukovit | 795.43 mi (1,280.12 km) |
| Sigmaringen to Lyaskovets | 866.73 mi (1,394.86 km) |
| Sigmaringen to Mezdra | 776.96 mi (1,250.40 km) |
| Sigmaringen to Momchilgrad | 911.49 mi (1,466.90 km) |
