| Hackettstown to Jicin | 4,132.81 mi (6,651.12 km) |
| Hackettstown to Jihlava | 4,177.11 mi (6,722.41 km) |
| Hackettstown to Jindrichuv Hradec | 4,162.77 mi (6,699.34 km) |
| Hackettstown to Jirkov | 4,057.07 mi (6,529.22 km) |
| Hackettstown to Kadan | 4,054.19 mi (6,524.58 km) |
| Hackettstown to Karlovy Vary | 4,043.27 mi (6,507.01 km) |
| Hackettstown to Karvina | 4,275.27 mi (6,880.38 km) |
| Hackettstown to Kladno | 4,093.83 mi (6,588.38 km) |
| Hackettstown to Klasterec nad Ohri | 4,050.01 mi (6,517.87 km) |
| Hackettstown to Klatovy | 4,086.95 mi (6,577.31 km) |
| Hackettstown to Kolin | 4,140.67 mi (6,663.76 km) |
| Hackettstown to Koprivnice | 4,269.12 mi (6,870.48 km) |
| Hackettstown to Kralupy nad Vltavou | 4,099.07 mi (6,596.82 km) |
| Hackettstown to Kraluv Dvur | 4,097.85 mi (6,594.85 km) |
| Hackettstown to Krnov | 4,234.68 mi (6,815.06 km) |
