| Rockwall to Montgomeryville (Pennsylvania) | 1,276.36 mi (2,054.11 km) |
| Rockwall to Monticello (Minnesota) | 867.00 mi (1,395.30 km) |
| Rockwall to Montrose (Colorado) | 746.09 mi (1,200.71 km) |
| Rockwall to Moody (Alabama) | 576.07 mi (927.09 km) |
| Rockwall to Moore (Oklahoma) | 176.94 mi (284.76 km) |
| Rockwall to Moorestown-Lenola (New Jersey) | 1,284.94 mi (2,067.92 km) |
| Rockwall to Mooresville (North Carolina) | 909.36 mi (1,463.47 km) |
| Rockwall to Moorhead (Minnesota) | 964.02 mi (1,551.43 km) |
| Rockwall to Moorpark (California) | 1,292.19 mi (2,079.58 km) |
| Rockwall to Moraga (California) | 1,481.34 mi (2,383.99 km) |
| Rockwall to Moreno Valley (California) | 1,197.59 mi (1,927.34 km) |
| Rockwall to Morgan City (Louisiana) | 380.90 mi (612.99 km) |
| Rockwall to Morgan Hill (California) | 1,450.99 mi (2,335.15 km) |
| Rockwall to Morganton (North Carolina) | 862.30 mi (1,387.73 km) |
| Rockwall to Morgantown (West Virginia) | 1,027.05 mi (1,652.87 km) |
