| North Richland Hills to Mangualde | 4,763.99 mi (7,666.90 km) |
| North Richland Hills to Marco de Canavezes | 4,728.36 mi (7,609.57 km) |
| North Richland Hills to Marinha Grande | 4,733.80 mi (7,618.32 km) |
| North Richland Hills to Massama | 4,747.00 mi (7,639.57 km) |
| North Richland Hills to Matosinhos | 4,702.50 mi (7,567.95 km) |
| North Richland Hills to Mealhada | 4,737.99 mi (7,625.06 km) |
| North Richland Hills to Melgaco | 4,695.42 mi (7,556.55 km) |
| North Richland Hills to Melres | 4,720.06 mi (7,596.21 km) |
| North Richland Hills to Mira | 4,723.05 mi (7,601.01 km) |
| North Richland Hills to Miranda do Corvo | 4,752.01 mi (7,647.62 km) |
| North Richland Hills to Mirandela | 4,764.63 mi (7,667.93 km) |
| North Richland Hills to Mogadouro | 4,790.89 mi (7,710.19 km) |
| North Richland Hills to Moimenta da Beira | 4,759.64 mi (7,659.89 km) |
| North Richland Hills to Moita | 4,764.37 mi (7,667.51 km) |
| North Richland Hills to Moncao | 4,686.78 mi (7,542.64 km) |
