| Howard to McKeesport (Pennsylvania) | 511.62 mi (823.37 km) |
| Howard to McKinleyville (California) | 1,827.89 mi (2,941.71 km) |
| Howard to McKinney (Texas) | 909.64 mi (1,463.92 km) |
| Howard to McLean (Virginia) | 682.20 mi (1,097.90 km) |
| Howard to McMinnville (Oregon) | 1,705.01 mi (2,743.95 km) |
| Howard to McMinnville (Tennessee) | 625.77 mi (1,007.08 km) |
| Howard to McNair (Virginia) | 672.73 mi (1,082.65 km) |
| Howard to McPherson (Kansas) | 654.02 mi (1,052.55 km) |
| Howard to Mead Valley (California) | 1,717.71 mi (2,764.39 km) |
| Howard to Meadow Woods (Florida) | 1,179.36 mi (1,898.00 km) |
| Howard to Meadowbrook (Virginia) | 740.48 mi (1,191.69 km) |
| Howard to Meadville (Pennsylvania) | 448.53 mi (721.85 km) |
| Howard to Mebane (North Carolina) | 747.04 mi (1,202.25 km) |
| Howard to Mechanicsville (Virginia) | 735.57 mi (1,183.78 km) |
| Howard to Medford (Massachusetts) | 862.45 mi (1,387.97 km) |
