| Hackettstown to Kidbrooke | 3,495.78 mi (5,625.92 km) |
| Hackettstown to Kidderminster | 3,383.75 mi (5,445.62 km) |
| Hackettstown to Kidlington | 3,434.26 mi (5,526.91 km) |
| Hackettstown to Kidsgrove | 3,369.97 mi (5,423.43 km) |
| Hackettstown to Killamarsh | 3,402.51 mi (5,475.81 km) |
| Hackettstown to Killingworth | 3,360.47 mi (5,408.16 km) |
| Hackettstown to Kilmarnock | 3,238.68 mi (5,212.15 km) |
| Hackettstown to Kilsyth | 3,249.63 mi (5,229.78 km) |
| Hackettstown to Kilwinning | 3,230.13 mi (5,198.39 km) |
| Hackettstown to King's Lynn | 3,482.03 mi (5,603.79 km) |
| Hackettstown to Kings Norton | 3,396.34 mi (5,465.89 km) |
| Hackettstown to Kingsnorth | 3,537.70 mi (5,693.38 km) |
| Hackettstown to Kingsteignton | 3,366.22 mi (5,417.41 km) |
| Hackettstown to Kingston upon Hull | 3,432.45 mi (5,524.00 km) |
| Hackettstown to Kingston upon Thames | 3,483.64 mi (5,606.38 km) |
