| Barbastro to McKeesport (Pennsylvania) | 3,997.45 mi (6,433.27 km) |
| Barbastro to McKinleyville (California) | 5,728.51 mi (9,219.15 km) |
| Barbastro to McKinney (Texas) | 5,040.59 mi (8,112.05 km) |
| Barbastro to McLean (Virginia) | 3,923.98 mi (6,315.03 km) |
| Barbastro to McMinnville (Oregon) | 5,470.48 mi (8,803.89 km) |
| Barbastro to McMinnville (Tennessee) | 4,442.69 mi (7,149.82 km) |
| Barbastro to McNair (Virginia) | 3,933.82 mi (6,330.87 km) |
| Barbastro to McPherson (Kansas) | 4,858.66 mi (7,819.25 km) |
| Barbastro to Mead Valley (California) | 5,866.45 mi (9,441.14 km) |
| Barbastro to Meadow Woods (Florida) | 4,523.99 mi (7,280.65 km) |
| Barbastro to Meadowbrook (Virginia) | 3,990.10 mi (6,421.44 km) |
| Barbastro to Meadville (Pennsylvania) | 3,966.07 mi (6,382.77 km) |
| Barbastro to Mebane (North Carolina) | 4,123.63 mi (6,636.34 km) |
| Barbastro to Mechanicsville (Virginia) | 3,977.60 mi (6,401.33 km) |
| Barbastro to Medford (Massachusetts) | 3,530.06 mi (5,681.08 km) |
