| Rockwall to Merriam (Kansas) | 432.69 mi (696.35 km) |
| Rockwall to Merrick (New York) | 1,369.27 mi (2,203.63 km) |
| Rockwall to Merrifield (Virginia) | 1,147.70 mi (1,847.05 km) |
| Rockwall to Merrillville (Indiana) | 774.48 mi (1,246.41 km) |
| Rockwall to Merritt Island (Florida) | 988.77 mi (1,591.27 km) |
| Rockwall to Mesa (Arizona) | 883.69 mi (1,422.16 km) |
| Rockwall to Mesquite (Nevada) | 1,036.83 mi (1,668.62 km) |
| Rockwall to Mesquite (Texas) | 13.86 mi (22.31 km) |
| Rockwall to Metairie (Louisiana) | 420.34 mi (676.47 km) |
| Rockwall to Methuen Town (Massachusetts) | 1,527.77 mi (2,458.71 km) |
| Rockwall to Metuchen (New Jersey) | 1,326.38 mi (2,134.61 km) |
| Rockwall to Mexico (Missouri) | 501.12 mi (806.47 km) |
| Rockwall to Miami (Florida) | 1,092.71 mi (1,758.54 km) |
| Rockwall to Miami (Oklahoma) | 288.35 mi (464.05 km) |
| Rockwall to Miami Beach (Florida) | 1,095.32 mi (1,762.76 km) |
