| Watertown Town to Karlovo | 4,589.85 mi (7,386.65 km) |
| Watertown Town to Karnobat | 4,678.33 mi (7,529.04 km) |
| Watertown Town to Kavarna | 4,698.05 mi (7,560.78 km) |
| Watertown Town to Kazanlak | 4,615.08 mi (7,427.25 km) |
| Watertown Town to Knezha | 4,525.34 mi (7,282.83 km) |
| Watertown Town to Kostinbrod | 4,517.71 mi (7,270.55 km) |
| Watertown Town to Kozloduy | 4,499.68 mi (7,241.54 km) |
| Watertown Town to Kyustendil | 4,517.29 mi (7,269.87 km) |
| Watertown Town to Levski | 4,573.23 mi (7,359.91 km) |
| Watertown Town to Lom | 4,477.89 mi (7,206.46 km) |
| Watertown Town to Lovech | 4,565.96 mi (7,348.20 km) |
| Watertown Town to Lukovit | 4,540.94 mi (7,307.94 km) |
| Watertown Town to Lyaskovets | 4,607.79 mi (7,415.52 km) |
| Watertown Town to Mezdra | 4,523.97 mi (7,280.63 km) |
| Watertown Town to Momchilgrad | 4,661.01 mi (7,501.17 km) |
