| Portishead to McKeesport (Pennsylvania) | 3,608.11 mi (5,806.69 km) |
| Portishead to McKinleyville (California) | 5,143.18 mi (8,277.14 km) |
| Portishead to McKinney (Texas) | 4,619.62 mi (7,434.56 km) |
| Portishead to McLean (Virginia) | 3,561.95 mi (5,732.41 km) |
| Portishead to McMinnville (Oregon) | 4,874.04 mi (7,844.01 km) |
| Portishead to McMinnville (Tennessee) | 4,063.23 mi (6,539.13 km) |
| Portishead to McNair (Virginia) | 3,570.55 mi (5,746.24 km) |
| Portishead to McPherson (Kansas) | 4,397.07 mi (7,076.40 km) |
| Portishead to Mead Valley (California) | 5,336.46 mi (8,588.20 km) |
| Portishead to Meadow Woods (Florida) | 4,235.36 mi (6,816.16 km) |
| Portishead to Meadowbrook (Virginia) | 3,641.40 mi (5,860.27 km) |
| Portishead to Meadville (Pennsylvania) | 3,562.93 mi (5,733.99 km) |
| Portishead to Mebane (North Carolina) | 3,777.58 mi (6,079.43 km) |
| Portishead to Mechanicsville (Virginia) | 3,627.64 mi (5,838.13 km) |
| Portishead to Medford (Massachusetts) | 3,162.86 mi (5,090.12 km) |
