| Cleethorpes to Karlovo | 1,360.39 mi (2,189.33 km) |
| Cleethorpes to Karnobat | 1,443.67 mi (2,323.36 km) |
| Cleethorpes to Kavarna | 1,460.83 mi (2,350.98 km) |
| Cleethorpes to Kazanlak | 1,384.01 mi (2,227.34 km) |
| Cleethorpes to Knezha | 1,293.79 mi (2,082.15 km) |
| Cleethorpes to Kostinbrod | 1,292.90 mi (2,080.72 km) |
| Cleethorpes to Kozloduy | 1,267.76 mi (2,040.26 km) |
| Cleethorpes to Kyustendil | 1,298.85 mi (2,090.30 km) |
| Cleethorpes to Levski | 1,339.74 mi (2,156.10 km) |
| Cleethorpes to Lom | 1,247.09 mi (2,007.00 km) |
| Cleethorpes to Lovech | 1,334.39 mi (2,147.50 km) |
| Cleethorpes to Lukovit | 1,310.60 mi (2,109.20 km) |
| Cleethorpes to Lyaskovets | 1,374.03 mi (2,211.29 km) |
| Cleethorpes to Mezdra | 1,295.35 mi (2,084.66 km) |
| Cleethorpes to Momchilgrad | 1,435.64 mi (2,310.44 km) |
