| Comacchio to McKeesport (Pennsylvania) | 4,431.64 mi (7,132.04 km) |
| Comacchio to McKinleyville (California) | 5,928.91 mi (9,541.66 km) |
| Comacchio to McKinney (Texas) | 5,449.52 mi (8,770.15 km) |
| Comacchio to McLean (Virginia) | 4,378.88 mi (7,047.13 km) |
| Comacchio to McMinnville (Oregon) | 5,651.13 mi (9,094.62 km) |
| Comacchio to McMinnville (Tennessee) | 4,885.67 mi (7,862.73 km) |
| Comacchio to McNair (Virginia) | 4,387.83 mi (7,061.54 km) |
| Comacchio to McPherson (Kansas) | 5,228.45 mi (8,414.37 km) |
| Comacchio to Mead Valley (California) | 6,153.77 mi (9,903.54 km) |
| Comacchio to Meadow Woods (Florida) | 5,029.96 mi (8,094.93 km) |
| Comacchio to Meadowbrook (Virginia) | 4,454.84 mi (7,169.37 km) |
| Comacchio to Meadville (Pennsylvania) | 4,388.99 mi (7,063.39 km) |
| Comacchio to Mebane (North Carolina) | 4,590.66 mi (7,387.95 km) |
| Comacchio to Mechanicsville (Virginia) | 4,441.40 mi (7,147.75 km) |
| Comacchio to Medford (Massachusetts) | 3,979.89 mi (6,405.01 km) |
