| Hackettstown to Mauldin (South Carolina) | 584.85 mi (941.22 km) |
| Hackettstown to Maumee (Ohio) | 461.82 mi (743.22 km) |
| Hackettstown to Maumelle (Arkansas) | 1,042.16 mi (1,677.20 km) |
| Hackettstown to Mayagüez (Puerto Rico) | 1,630.29 mi (2,623.70 km) |
| Hackettstown to Mayfield Heights (Ohio) | 347.57 mi (559.37 km) |
| Hackettstown to Mays Chapel (Maryland) | 137.55 mi (221.37 km) |
| Hackettstown to Maywood (California) | 2,401.06 mi (3,864.14 km) |
| Hackettstown to Maywood (Illinois) | 678.11 mi (1,091.31 km) |
| Hackettstown to McAlester (Oklahoma) | 1,209.83 mi (1,947.03 km) |
| Hackettstown to McAllen (Texas) | 1,676.32 mi (2,697.77 km) |
| Hackettstown to McCalla (Alabama) | 849.97 mi (1,367.89 km) |
| Hackettstown to McComb (Mississippi) | 1,094.75 mi (1,761.83 km) |
| Hackettstown to McDonough (Georgia) | 724.53 mi (1,166.02 km) |
| Hackettstown to McFarland (California) | 2,409.82 mi (3,878.23 km) |
| Hackettstown to McHenry (Illinois) | 702.63 mi (1,130.78 km) |
