| Comacchio to Mauldin (South Carolina) | 4,779.21 mi (7,691.40 km) |
| Comacchio to Maumee (Ohio) | 4,534.93 mi (7,298.27 km) |
| Comacchio to Maumelle (Arkansas) | 5,197.25 mi (8,364.17 km) |
| Comacchio to Mayagüez (Puerto Rico) | 4,824.81 mi (7,764.78 km) |
| Comacchio to Mayfield Heights (Ohio) | 4,447.86 mi (7,158.13 km) |
| Comacchio to Mays Chapel (Maryland) | 4,335.25 mi (6,976.91 km) |
| Comacchio to Maywood (California) | 6,172.99 mi (9,934.47 km) |
| Comacchio to Maywood (Illinois) | 4,686.34 mi (7,541.94 km) |
| Comacchio to McAlester (Oklahoma) | 5,327.98 mi (8,574.55 km) |
| Comacchio to McAllen (Texas) | 5,868.56 mi (9,444.53 km) |
| Comacchio to McCalla (Alabama) | 5,049.14 mi (8,125.81 km) |
| Comacchio to McComb (Mississippi) | 5,292.72 mi (8,517.81 km) |
| Comacchio to McDonough (Georgia) | 4,919.82 mi (7,917.68 km) |
| Comacchio to McFarland (California) | 6,106.66 mi (9,827.71 km) |
| Comacchio to McHenry (Illinois) | 4,682.95 mi (7,536.48 km) |
