| Barstow to McKeesport (Pennsylvania) | 2,055.75 mi (3,308.40 km) |
| Barstow to McKinleyville (California) | 568.68 mi (915.21 km) |
| Barstow to McKinney (Texas) | 1,170.55 mi (1,883.82 km) |
| Barstow to McLean (Virginia) | 2,202.20 mi (3,544.09 km) |
| Barstow to McMinnville (Oregon) | 784.60 mi (1,262.70 km) |
| Barstow to McMinnville (Tennessee) | 1,757.03 mi (2,827.67 km) |
| Barstow to McNair (Virginia) | 2,190.52 mi (3,525.31 km) |
| Barstow to McPherson (Kansas) | 1,099.81 mi (1,769.98 km) |
| Barstow to Mead Valley (California) | 72.64 mi (116.90 km) |
| Barstow to Meadow Woods (Florida) | 2,136.18 mi (3,437.84 km) |
| Barstow to Meadowbrook (Virginia) | 2,198.82 mi (3,538.66 km) |
| Barstow to Meadville (Pennsylvania) | 2,039.61 mi (3,282.44 km) |
| Barstow to Mebane (North Carolina) | 2,113.66 mi (3,401.60 km) |
| Barstow to Mechanicsville (Virginia) | 2,203.47 mi (3,546.14 km) |
| Barstow to Medford (Massachusetts) | 2,501.94 mi (4,026.49 km) |
