| Herndon to Manassas (Virginia) | 16.20 mi (26.08 km) |
| Herndon to Manassas Park (Virginia) | 14.08 mi (22.66 km) |
| Herndon to Manatí (Puerto Rico) | 1,562.65 mi (2,514.84 km) |
| Herndon to Manchester (Missouri) | 706.58 mi (1,137.14 km) |
| Herndon to Manchester (New Hampshire) | 415.76 mi (669.11 km) |
| Herndon to Manchester (Tennessee) | 535.74 mi (862.19 km) |
| Herndon to Manchester (Virginia) | 102.57 mi (165.08 km) |
| Herndon to Mandan (North Dakota) | 1,300.94 mi (2,093.65 km) |
| Herndon to Mandeville (Louisiana) | 933.10 mi (1,501.67 km) |
| Herndon to Mango (Florida) | 809.44 mi (1,302.67 km) |
| Herndon to Manhattan (Kansas) | 1,028.95 mi (1,655.93 km) |
| Herndon to Manhattan (New York) | 220.41 mi (354.72 km) |
| Herndon to Manhattan Beach (California) | 2,287.21 mi (3,680.91 km) |
| Herndon to Manitowoc (Wisconsin) | 638.83 mi (1,028.11 km) |
| Herndon to Mankato (Minnesota) | 927.71 mi (1,493.01 km) |
