| Waterville to Karlovo | 4,439.72 mi (7,145.04 km) |
| Waterville to Karnobat | 4,526.81 mi (7,285.19 km) |
| Waterville to Kavarna | 4,544.84 mi (7,314.21 km) |
| Waterville to Kazanlak | 4,464.59 mi (7,185.06 km) |
| Waterville to Knezha | 4,374.67 mi (7,040.36 km) |
| Waterville to Kostinbrod | 4,368.41 mi (7,030.28 km) |
| Waterville to Kozloduy | 4,348.91 mi (6,998.89 km) |
| Waterville to Kyustendil | 4,369.00 mi (7,031.23 km) |
| Waterville to Levski | 4,422.06 mi (7,116.62 km) |
| Waterville to Lom | 4,327.37 mi (6,964.23 km) |
| Waterville to Lovech | 4,415.32 mi (7,105.77 km) |
| Waterville to Lukovit | 4,390.57 mi (7,065.95 km) |
| Waterville to Lyaskovets | 4,456.55 mi (7,172.13 km) |
| Waterville to Mezdra | 4,373.97 mi (7,039.22 km) |
| Waterville to Momchilgrad | 4,511.77 mi (7,260.99 km) |
