| Hackettstown to Merrick (New York) | 68.04 mi (109.50 km) |
| Hackettstown to Merrifield (Virginia) | 187.50 mi (301.75 km) |
| Hackettstown to Merrillville (Indiana) | 650.72 mi (1,047.23 km) |
| Hackettstown to Merritt Island (Florida) | 927.45 mi (1,492.58 km) |
| Hackettstown to Mesa (Arizona) | 2,079.99 mi (3,347.42 km) |
| Hackettstown to Mesquite (Nevada) | 2,116.26 mi (3,405.80 km) |
| Hackettstown to Mesquite (Texas) | 1,322.54 mi (2,128.43 km) |
| Hackettstown to Metairie (Louisiana) | 1,141.32 mi (1,836.78 km) |
| Hackettstown to Methuen Town (Massachusetts) | 227.93 mi (366.82 km) |
| Hackettstown to Metuchen (New Jersey) | 32.43 mi (52.19 km) |
| Hackettstown to Mexico (Missouri) | 908.15 mi (1,461.53 km) |
| Hackettstown to Miami (Florida) | 1,086.05 mi (1,747.83 km) |
| Hackettstown to Miami (Oklahoma) | 1,109.86 mi (1,786.14 km) |
| Hackettstown to Miami Beach (Florida) | 1,082.70 mi (1,742.44 km) |
| Hackettstown to Miami Gardens (Florida) | 1,075.97 mi (1,731.61 km) |
