| Washington Court House to Mangualde | 3,868.90 mi (6,226.39 km) |
| Washington Court House to Marco de Canavezes | 3,833.39 mi (6,169.24 km) |
| Washington Court House to Marinha Grande | 3,838.71 mi (6,177.80 km) |
| Washington Court House to Massama | 3,852.29 mi (6,199.66 km) |
| Washington Court House to Matosinhos | 3,807.47 mi (6,127.53 km) |
| Washington Court House to Mealhada | 3,842.84 mi (6,184.46 km) |
| Washington Court House to Melgaco | 3,800.85 mi (6,116.87 km) |
| Washington Court House to Melres | 3,825.03 mi (6,155.79 km) |
| Washington Court House to Mira | 3,827.90 mi (6,160.41 km) |
| Washington Court House to Miranda do Corvo | 3,856.86 mi (6,207.01 km) |
| Washington Court House to Mirandela | 3,869.91 mi (6,228.03 km) |
| Washington Court House to Mogadouro | 3,896.18 mi (6,270.30 km) |
| Washington Court House to Moimenta da Beira | 3,864.66 mi (6,219.56 km) |
| Washington Court House to Moita | 3,869.65 mi (6,227.60 km) |
| Washington Court House to Moncao | 3,792.13 mi (6,102.85 km) |
