| Hackettstown to Karditsa | 4,818.69 mi (7,754.94 km) |
| Hackettstown to Kastoria | 4,743.77 mi (7,634.36 km) |
| Hackettstown to Katerini | 4,806.22 mi (7,734.87 km) |
| Hackettstown to Keratsini | 4,950.29 mi (7,966.73 km) |
| Hackettstown to Kerkyra | 4,722.44 mi (7,600.03 km) |
| Hackettstown to Kiato | 4,911.12 mi (7,903.68 km) |
| Hackettstown to Kifisia | 4,953.91 mi (7,972.55 km) |
| Hackettstown to Kilkis | 4,791.97 mi (7,711.92 km) |
| Hackettstown to Komotini | 4,892.67 mi (7,873.98 km) |
| Hackettstown to Korinthos | 4,921.81 mi (7,920.89 km) |
| Hackettstown to Koropi | 4,964.15 mi (7,989.02 km) |
| Hackettstown to Korydallos | 4,951.02 mi (7,967.89 km) |
| Hackettstown to Kos | 5,153.16 mi (8,293.21 km) |
| Hackettstown to Kozani | 4,774.54 mi (7,683.87 km) |
| Hackettstown to Lagos | 4,877.98 mi (7,850.35 km) |
