| Herndon to Merrick (New York) | 234.25 mi (376.99 km) |
| Herndon to Merrifield (Virginia) | 10.23 mi (16.47 km) |
| Herndon to Merrillville (Indiana) | 551.44 mi (887.45 km) |
| Herndon to Merritt Island (Florida) | 759.95 mi (1,223.02 km) |
| Herndon to Mesa (Arizona) | 1,940.83 mi (3,123.46 km) |
| Herndon to Mesquite (Nevada) | 1,995.81 mi (3,211.95 km) |
| Herndon to Mesquite (Texas) | 1,154.64 mi (1,858.21 km) |
| Herndon to Metairie (Louisiana) | 954.82 mi (1,536.63 km) |
| Herndon to Methuen Town (Massachusetts) | 415.20 mi (668.20 km) |
| Herndon to Metuchen (New Jersey) | 193.90 mi (312.05 km) |
| Herndon to Mexico (Missouri) | 776.31 mi (1,249.36 km) |
| Herndon to Miami (Florida) | 925.69 mi (1,489.75 km) |
| Herndon to Miami (Oklahoma) | 962.15 mi (1,548.42 km) |
| Herndon to Miami Beach (Florida) | 922.72 mi (1,484.97 km) |
| Herndon to Miami Gardens (Florida) | 915.18 mi (1,472.83 km) |
