| Somain to Karlovo | 1,148.44 mi (1,848.23 km) |
| Somain to Karnobat | 1,240.16 mi (1,995.85 km) |
| Somain to Kavarna | 1,268.28 mi (2,041.10 km) |
| Somain to Kazanlak | 1,174.22 mi (1,889.72 km) |
| Somain to Knezha | 1,085.00 mi (1,746.13 km) |
| Somain to Kostinbrod | 1,075.74 mi (1,731.24 km) |
| Somain to Kozloduy | 1,059.68 mi (1,705.39 km) |
| Somain to Kyustendil | 1,076.13 mi (1,731.87 km) |
| Somain to Levski | 1,134.20 mi (1,825.32 km) |
| Somain to Lom | 1,037.29 mi (1,669.35 km) |
| Somain to Lovech | 1,125.50 mi (1,811.31 km) |
| Somain to Lukovit | 1,099.95 mi (1,770.20 km) |
| Somain to Lyaskovets | 1,168.87 mi (1,881.11 km) |
| Somain to Mezdra | 1,082.45 mi (1,742.04 km) |
| Somain to Momchilgrad | 1,219.05 mi (1,961.87 km) |
