| Portogruaro to McKeesport (Pennsylvania) | 4,418.63 mi (7,111.10 km) |
| Portogruaro to McKinleyville (California) | 5,881.47 mi (9,465.32 km) |
| Portogruaro to McKinney (Texas) | 5,430.68 mi (8,739.83 km) |
| Portogruaro to McLean (Virginia) | 4,369.57 mi (7,032.15 km) |
| Portogruaro to McMinnville (Oregon) | 5,601.94 mi (9,015.45 km) |
| Portogruaro to McMinnville (Tennessee) | 4,873.42 mi (7,843.02 km) |
| Portogruaro to McNair (Virginia) | 4,378.35 mi (7,046.28 km) |
| Portogruaro to McPherson (Kansas) | 5,203.85 mi (8,374.79 km) |
| Portogruaro to Mead Valley (California) | 6,116.35 mi (9,843.31 km) |
| Portogruaro to Meadow Woods (Florida) | 5,029.51 mi (8,094.22 km) |
| Portogruaro to Meadowbrook (Virginia) | 4,447.18 mi (7,157.04 km) |
| Portogruaro to Meadville (Pennsylvania) | 4,374.16 mi (7,039.53 km) |
| Portogruaro to Mebane (North Carolina) | 4,583.20 mi (7,375.95 km) |
| Portogruaro to Mechanicsville (Virginia) | 4,433.59 mi (7,135.18 km) |
| Portogruaro to Medford (Massachusetts) | 3,970.41 mi (6,389.76 km) |
