| Thatto Heath to Mangualde | 916.87 mi (1,475.55 km) |
| Thatto Heath to Marco de Canavezes | 882.90 mi (1,420.89 km) |
| Thatto Heath to Marinha Grande | 989.18 mi (1,591.94 km) |
| Thatto Heath to Massama | 1,060.20 mi (1,706.22 km) |
| Thatto Heath to Matosinhos | 890.49 mi (1,433.10 km) |
| Thatto Heath to Mealhada | 940.35 mi (1,513.34 km) |
| Thatto Heath to Melgaco | 822.32 mi (1,323.40 km) |
| Thatto Heath to Melres | 894.04 mi (1,438.82 km) |
| Thatto Heath to Mira | 940.85 mi (1,514.15 km) |
| Thatto Heath to Miranda do Corvo | 957.80 mi (1,541.43 km) |
| Thatto Heath to Mirandela | 850.81 mi (1,369.25 km) |
| Thatto Heath to Mogadouro | 856.18 mi (1,377.89 km) |
| Thatto Heath to Moimenta da Beira | 889.85 mi (1,432.07 km) |
| Thatto Heath to Moita | 1,063.41 mi (1,711.40 km) |
| Thatto Heath to Moncao | 828.28 mi (1,333.00 km) |
