| Hackettstown to Manassas (Virginia) | 202.67 mi (326.17 km) |
| Hackettstown to Manassas Park (Virginia) | 200.00 mi (321.88 km) |
| Hackettstown to Manatí (Puerto Rico) | 1,626.47 mi (2,617.55 km) |
| Hackettstown to Manchester (Missouri) | 846.80 mi (1,362.79 km) |
| Hackettstown to Manchester (New Hampshire) | 227.76 mi (366.54 km) |
| Hackettstown to Manchester (Tennessee) | 714.96 mi (1,150.62 km) |
| Hackettstown to Manchester (Virginia) | 274.10 mi (441.12 km) |
| Hackettstown to Mandan (North Dakota) | 1,355.49 mi (2,181.45 km) |
| Hackettstown to Mandeville (Louisiana) | 1,119.23 mi (1,801.22 km) |
| Hackettstown to Mango (Florida) | 984.74 mi (1,584.78 km) |
| Hackettstown to Manhattan (Kansas) | 1,155.10 mi (1,858.96 km) |
| Hackettstown to Manhattan (New York) | 45.21 mi (72.75 km) |
| Hackettstown to Manhattan Beach (California) | 2,414.81 mi (3,886.26 km) |
| Hackettstown to Manitowoc (Wisconsin) | 691.54 mi (1,112.92 km) |
| Hackettstown to Mankato (Minnesota) | 999.47 mi (1,608.49 km) |
