| Hackettstown to Klaukkala | 4,115.89 mi (6,623.88 km) |
| Hackettstown to Kokkola | 3,955.79 mi (6,366.23 km) |
| Hackettstown to Kontiolahti | 4,173.28 mi (6,716.24 km) |
| Hackettstown to Korsholm | 3,938.14 mi (6,337.83 km) |
| Hackettstown to Kotka | 4,177.05 mi (6,722.31 km) |
| Hackettstown to Kouvola | 4,155.71 mi (6,687.97 km) |
| Hackettstown to Kuhmo | 4,114.50 mi (6,621.65 km) |
| Hackettstown to Kuopio | 4,110.50 mi (6,615.20 km) |
| Hackettstown to Kurikka | 3,973.89 mi (6,395.36 km) |
| Hackettstown to Kuusamo | 4,040.30 mi (6,502.24 km) |
| Hackettstown to Kuusankoski | 4,151.95 mi (6,681.92 km) |
| Hackettstown to Lahti | 4,121.25 mi (6,632.50 km) |
| Hackettstown to Laitila | 4,008.70 mi (6,451.38 km) |
| Hackettstown to Lapinlahti | 4,085.82 mi (6,575.49 km) |
| Hackettstown to Lappeenranta | 4,190.64 mi (6,744.18 km) |
