| Comacchio to Marysville (California) | 5,969.53 mi (9,607.03 km) |
| Comacchio to Marysville (Ohio) | 4,581.28 mi (7,372.86 km) |
| Comacchio to Marysville (Washington) | 5,455.60 mi (8,779.93 km) |
| Comacchio to Maryville (Missouri) | 5,026.83 mi (8,089.91 km) |
| Comacchio to Maryville (Tennessee) | 4,807.08 mi (7,736.25 km) |
| Comacchio to Mason (Ohio) | 4,658.24 mi (7,496.71 km) |
| Comacchio to Mason City (Iowa) | 4,830.37 mi (7,773.73 km) |
| Comacchio to Massapequa (New York) | 4,149.08 mi (6,677.30 km) |
| Comacchio to Massapequa Park (New York) | 4,147.62 mi (6,674.95 km) |
| Comacchio to Massillon (Ohio) | 4,482.19 mi (7,213.39 km) |
| Comacchio to Mastic (New York) | 4,116.74 mi (6,625.26 km) |
| Comacchio to Mastic Beach (New York) | 4,117.97 mi (6,627.24 km) |
| Comacchio to Matteson (Illinois) | 4,699.31 mi (7,562.80 km) |
| Comacchio to Matthews (North Carolina) | 4,695.37 mi (7,556.47 km) |
| Comacchio to Mattoon (Illinois) | 4,816.43 mi (7,751.29 km) |
