| Hackettstown to Krosno Odrzanskie | 4,070.67 mi (6,551.10 km) |
| Hackettstown to Krotoszyn | 4,169.58 mi (6,710.28 km) |
| Hackettstown to Kruszwica | 4,168.65 mi (6,708.79 km) |
| Hackettstown to Krynica | 4,383.05 mi (7,053.84 km) |
| Hackettstown to Krzeszowice | 4,306.59 mi (6,930.78 km) |
| Hackettstown to Kudowa-Zdroj | 4,166.86 mi (6,705.91 km) |
| Hackettstown to Kutno | 4,221.82 mi (6,794.36 km) |
| Hackettstown to Kwidzyn | 4,154.21 mi (6,685.56 km) |
| Hackettstown to Lancut | 4,406.33 mi (7,091.30 km) |
| Hackettstown to Lapy | 4,320.71 mi (6,953.52 km) |
| Hackettstown to Lask | 4,235.86 mi (6,816.95 km) |
| Hackettstown to Laziska Gorne | 4,276.38 mi (6,882.17 km) |
| Hackettstown to Lebork | 4,085.19 mi (6,574.47 km) |
| Hackettstown to Leczna | 4,383.58 mi (7,054.69 km) |
| Hackettstown to Leczyca | 4,222.15 mi (6,794.90 km) |
