| Harwich to Karlovo | 1,268.05 mi (2,040.73 km) |
| Harwich to Karnobat | 1,355.83 mi (2,182.00 km) |
| Harwich to Kavarna | 1,378.60 mi (2,218.64 km) |
| Harwich to Kazanlak | 1,292.83 mi (2,080.60 km) |
| Harwich to Knezha | 1,202.93 mi (1,935.93 km) |
| Harwich to Kostinbrod | 1,197.73 mi (1,927.57 km) |
| Harwich to Kozloduy | 1,177.20 mi (1,894.52 km) |
| Harwich to Kyustendil | 1,200.79 mi (1,932.48 km) |
| Harwich to Levski | 1,250.65 mi (2,012.72 km) |
| Harwich to Lom | 1,155.61 mi (1,859.77 km) |
| Harwich to Lovech | 1,243.57 mi (2,001.34 km) |
| Harwich to Lukovit | 1,218.83 mi (1,961.51 km) |
| Harwich to Lyaskovets | 1,285.20 mi (2,068.34 km) |
| Harwich to Mezdra | 1,202.39 mi (1,935.05 km) |
| Harwich to Momchilgrad | 1,341.02 mi (2,158.17 km) |
