| Rockport to Mattoon (Illinois) | 934.85 mi (1,504.50 km) |
| Rockport to Mauldin (South Carolina) | 986.53 mi (1,587.67 km) |
| Rockport to Maumee (Ohio) | 1,202.72 mi (1,935.60 km) |
| Rockport to Maumelle (Arkansas) | 545.81 mi (878.40 km) |
| Rockport to Mayagüez (Puerto Rico) | 2,013.06 mi (3,239.71 km) |
| Rockport to Mayfield Heights (Ohio) | 1,282.11 mi (2,063.36 km) |
| Rockport to Mays Chapel (Maryland) | 1,408.07 mi (2,266.06 km) |
| Rockport to Maywood (California) | 1,313.57 mi (2,113.99 km) |
| Rockport to Maywood (Illinois) | 1,088.78 mi (1,752.22 km) |
| Rockport to McAlester (Oklahoma) | 482.61 mi (776.68 km) |
| Rockport to McAllen (Texas) | 144.04 mi (231.81 km) |
| Rockport to McCalla (Alabama) | 698.70 mi (1,124.44 km) |
| Rockport to McComb (Mississippi) | 454.26 mi (731.07 km) |
| Rockport to McDonough (Georgia) | 852.71 mi (1,372.30 km) |
| Rockport to McFarland (California) | 1,400.24 mi (2,253.47 km) |
