| Herndon to Mendota Heights (Minnesota) | 904.87 mi (1,456.25 km) |
| Herndon to Menifee (California) | 2,227.16 mi (3,584.27 km) |
| Herndon to Menlo Park (California) | 2,408.34 mi (3,875.85 km) |
| Herndon to Menomonee Falls (Wisconsin) | 628.78 mi (1,011.92 km) |
| Herndon to Menomonie (Wisconsin) | 849.38 mi (1,366.94 km) |
| Herndon to Mentor (Ohio) | 280.26 mi (451.04 km) |
| Herndon to Mequon (Wisconsin) | 624.84 mi (1,005.58 km) |
| Herndon to Merced (California) | 2,322.61 mi (3,737.87 km) |
| Herndon to Mercedes (Texas) | 1,481.60 mi (2,384.41 km) |
| Herndon to Mercer Island (Washington) | 2,298.58 mi (3,699.20 km) |
| Herndon to Mercerville (New Jersey) | 168.02 mi (270.41 km) |
| Herndon to Meriden (Connecticut) | 300.08 mi (482.94 km) |
| Herndon to Meridian (Idaho) | 2,031.42 mi (3,269.26 km) |
| Herndon to Meridian (Mississippi) | 779.67 mi (1,254.76 km) |
| Herndon to Merriam (Kansas) | 927.96 mi (1,493.41 km) |
