| Grays to Monticello (Minnesota) | 4,032.54 mi (6,489.75 km) |
| Grays to Montrose (Colorado) | 4,868.34 mi (7,834.84 km) |
| Grays to Moody (Alabama) | 4,318.79 mi (6,950.43 km) |
| Grays to Moore (Oklahoma) | 4,660.76 mi (7,500.78 km) |
| Grays to Moorestown-Lenola (New Jersey) | 3,552.29 mi (5,716.86 km) |
| Grays to Mooresville (North Carolina) | 3,992.46 mi (6,425.24 km) |
| Grays to Moorhead (Minnesota) | 4,060.64 mi (6,534.97 km) |
| Grays to Moorpark (California) | 5,463.28 mi (8,792.30 km) |
| Grays to Moraga (California) | 5,356.35 mi (8,620.21 km) |
| Grays to Moreno Valley (California) | 5,430.56 mi (8,739.65 km) |
| Grays to Morgan City (Louisiana) | 4,703.95 mi (7,570.27 km) |
| Grays to Morgan Hill (California) | 5,383.53 mi (8,663.95 km) |
| Grays to Morganton (North Carolina) | 4,020.68 mi (6,470.66 km) |
| Grays to Morgantown (West Virginia) | 3,768.54 mi (6,064.89 km) |
| Grays to Morris (Illinois) | 4,019.99 mi (6,469.55 km) |
