| Hackettstown to Kirchlengern | 3,818.94 mi (6,145.99 km) |
| Hackettstown to Kirchlinteln | 3,824.49 mi (6,154.92 km) |
| Hackettstown to Kirchseeon | 4,073.62 mi (6,555.85 km) |
| Hackettstown to Kirchzarten | 3,915.10 mi (6,300.74 km) |
| Hackettstown to Kirkel | 3,846.41 mi (6,190.20 km) |
| Hackettstown to Kissing | 4,029.53 mi (6,484.90 km) |
| Hackettstown to Kisslegg | 4,000.68 mi (6,438.47 km) |
| Hackettstown to Kitzingen | 3,951.67 mi (6,359.61 km) |
| Hackettstown to Kleinblittersdorf | 3,842.05 mi (6,183.18 km) |
| Hackettstown to Kleve | 3,732.68 mi (6,007.16 km) |
| Hackettstown to Klipphausen | 4,041.66 mi (6,504.43 km) |
| Hackettstown to Klotze | 3,903.64 mi (6,282.30 km) |
| Hackettstown to Koblenz | 3,830.15 mi (6,164.03 km) |
| Hackettstown to Kolbermoor | 4,088.28 mi (6,579.46 km) |
| Hackettstown to Kolkwitz | 4,047.57 mi (6,513.94 km) |
