| Washington Court House to Mattoon (Illinois) | 263.03 mi (423.31 km) |
| Washington Court House to Mauldin (South Carolina) | 334.39 mi (538.14 km) |
| Washington Court House to Maumee (Ohio) | 140.91 mi (226.77 km) |
| Washington Court House to Maumelle (Arkansas) | 590.01 mi (949.52 km) |
| Washington Court House to Mayagüez (Puerto Rico) | 1,766.84 mi (2,843.45 km) |
| Washington Court House to Mayfield Heights (Ohio) | 171.62 mi (276.20 km) |
| Washington Court House to Mays Chapel (Maryland) | 361.34 mi (581.52 km) |
| Washington Court House to Maywood (California) | 1,949.25 mi (3,137.01 km) |
| Washington Court House to Maywood (Illinois) | 282.20 mi (454.16 km) |
| Washington Court House to McAlester (Oklahoma) | 749.30 mi (1,205.88 km) |
| Washington Court House to McAllen (Texas) | 1,255.65 mi (2,020.78 km) |
| Washington Court House to McCalla (Alabama) | 475.01 mi (764.45 km) |
| Washington Court House to McComb (Mississippi) | 696.44 mi (1,120.81 km) |
| Washington Court House to McDonough (Georgia) | 423.26 mi (681.17 km) |
| Washington Court House to McFarland (California) | 1,965.25 mi (3,162.77 km) |
