| Herndon to Monticello (Minnesota) | 945.40 mi (1,521.47 km) |
| Herndon to Montrose (Colorado) | 1,635.35 mi (2,631.84 km) |
| Herndon to Moody (Alabama) | 628.06 mi (1,010.77 km) |
| Herndon to Moore (Oklahoma) | 1,132.04 mi (1,821.85 km) |
| Herndon to Moorestown-Lenola (New Jersey) | 146.38 mi (235.58 km) |
| Herndon to Mooresville (North Carolina) | 300.73 mi (483.98 km) |
| Herndon to Moorhead (Minnesota) | 1,116.94 mi (1,797.54 km) |
| Herndon to Moorpark (California) | 2,303.25 mi (3,706.72 km) |
| Herndon to Moraga (California) | 2,398.69 mi (3,860.31 km) |
| Herndon to Moreno Valley (California) | 2,222.45 mi (3,576.69 km) |
| Herndon to Morgan City (Louisiana) | 1,012.92 mi (1,630.14 km) |
| Herndon to Morgan Hill (California) | 2,387.39 mi (3,842.14 km) |
| Herndon to Morganton (North Carolina) | 325.35 mi (523.59 km) |
| Herndon to Morgantown (West Virginia) | 144.43 mi (232.43 km) |
| Herndon to Morris (Illinois) | 605.77 mi (974.90 km) |
