| Barrow in Furness to McKeesport (Pennsylvania) | 3,531.19 mi (5,682.89 km) |
| Barrow in Furness to McKinleyville (California) | 4,996.21 mi (8,040.63 km) |
| Barrow in Furness to McKinney (Texas) | 4,527.81 mi (7,286.80 km) |
| Barrow in Furness to McLean (Virginia) | 3,494.01 mi (5,623.06 km) |
| Barrow in Furness to McMinnville (Oregon) | 4,723.58 mi (7,601.87 km) |
| Barrow in Furness to McMinnville (Tennessee) | 3,986.95 mi (6,416.37 km) |
| Barrow in Furness to McNair (Virginia) | 3,502.15 mi (5,636.17 km) |
| Barrow in Furness to McPherson (Kansas) | 4,293.19 mi (6,909.22 km) |
| Barrow in Furness to Mead Valley (California) | 5,207.64 mi (8,380.89 km) |
| Barrow in Furness to Meadow Woods (Florida) | 4,186.01 mi (6,736.73 km) |
| Barrow in Furness to Meadowbrook (Virginia) | 3,577.16 mi (5,756.88 km) |
| Barrow in Furness to Meadville (Pennsylvania) | 3,481.84 mi (5,603.47 km) |
| Barrow in Furness to Mebane (North Carolina) | 3,713.33 mi (5,976.02 km) |
| Barrow in Furness to Mechanicsville (Virginia) | 3,563.09 mi (5,734.24 km) |
| Barrow in Furness to Medford (Massachusetts) | 3,096.01 mi (4,982.54 km) |
