| Widnes to Karlovo | 1,459.25 mi (2,348.43 km) |
| Widnes to Karnobat | 1,545.06 mi (2,486.53 km) |
| Widnes to Kavarna | 1,564.85 mi (2,518.38 km) |
| Widnes to Kazanlak | 1,483.55 mi (2,387.55 km) |
| Widnes to Knezha | 1,393.47 mi (2,242.57 km) |
| Widnes to Kostinbrod | 1,389.96 mi (2,236.92 km) |
| Widnes to Kozloduy | 1,367.59 mi (2,200.92 km) |
| Widnes to Kyustendil | 1,393.92 mi (2,243.29 km) |
| Widnes to Levski | 1,440.42 mi (2,318.13 km) |
| Widnes to Lom | 1,346.39 mi (2,166.80 km) |
| Widnes to Lovech | 1,434.12 mi (2,307.99 km) |
| Widnes to Lukovit | 1,409.76 mi (2,268.79 km) |
| Widnes to Lyaskovets | 1,474.87 mi (2,373.57 km) |
| Widnes to Mezdra | 1,393.80 mi (2,243.10 km) |
| Widnes to Momchilgrad | 1,533.12 mi (2,467.31 km) |
