| Helston to Karlovo | 1,511.28 mi (2,432.18 km) |
| Helston to Karnobat | 1,607.31 mi (2,586.71 km) |
| Helston to Kavarna | 1,640.12 mi (2,639.52 km) |
| Helston to Kazanlak | 1,538.24 mi (2,475.55 km) |
| Helston to Knezha | 1,450.35 mi (2,334.11 km) |
| Helston to Kostinbrod | 1,435.60 mi (2,310.37 km) |
| Helston to Kozloduy | 1,425.65 mi (2,294.37 km) |
| Helston to Kyustendil | 1,431.38 mi (2,303.59 km) |
| Helston to Levski | 1,500.99 mi (2,415.61 km) |
| Helston to Lom | 1,402.46 mi (2,257.04 km) |
| Helston to Lovech | 1,490.45 mi (2,398.65 km) |
| Helston to Lukovit | 1,464.05 mi (2,356.16 km) |
| Helston to Lyaskovets | 1,535.61 mi (2,471.32 km) |
| Helston to Mezdra | 1,445.26 mi (2,325.92 km) |
| Helston to Momchilgrad | 1,577.96 mi (2,539.48 km) |
