| Hackettstown to Karlskoga | 3,831.44 mi (6,166.11 km) |
| Hackettstown to Karlskrona | 3,958.77 mi (6,371.03 km) |
| Hackettstown to Karlstad | 3,797.39 mi (6,111.31 km) |
| Hackettstown to Katrineholm | 3,895.26 mi (6,268.82 km) |
| Hackettstown to Kavlinge | 3,883.14 mi (6,249.32 km) |
| Hackettstown to Kinna | 3,820.05 mi (6,147.77 km) |
| Hackettstown to Kiruna | 3,767.25 mi (6,062.80 km) |
| Hackettstown to Klippansbruk | 3,875.20 mi (6,236.53 km) |
| Hackettstown to Koping | 3,873.49 mi (6,233.78 km) |
| Hackettstown to Kristianstad | 3,912.04 mi (6,295.82 km) |
| Hackettstown to Kristinehamn | 3,819.38 mi (6,146.70 km) |
| Hackettstown to Kumla | 3,857.41 mi (6,207.90 km) |
| Hackettstown to Kungalv | 3,786.28 mi (6,093.42 km) |
| Hackettstown to Kungsangen | 3,930.65 mi (6,325.76 km) |
| Hackettstown to Kungsbacka | 3,799.87 mi (6,115.30 km) |
