| Seacroft to Mangualde | 959.03 mi (1,543.40 km) |
| Seacroft to Marco de Canavezes | 926.41 mi (1,490.91 km) |
| Seacroft to Marinha Grande | 1,033.20 mi (1,662.77 km) |
| Seacroft to Massama | 1,104.16 mi (1,776.97 km) |
| Seacroft to Matosinhos | 935.19 mi (1,505.05 km) |
| Seacroft to Mealhada | 983.85 mi (1,583.35 km) |
| Seacroft to Melgaco | 866.93 mi (1,395.20 km) |
| Seacroft to Melres | 938.00 mi (1,509.56 km) |
| Seacroft to Mira | 984.99 mi (1,585.19 km) |
| Seacroft to Miranda do Corvo | 1,000.83 mi (1,610.68 km) |
| Seacroft to Mirandela | 892.30 mi (1,436.02 km) |
| Seacroft to Mogadouro | 896.39 mi (1,442.60 km) |
| Seacroft to Moimenta da Beira | 931.96 mi (1,499.85 km) |
| Seacroft to Moita | 1,106.74 mi (1,781.12 km) |
| Seacroft to Moncao | 873.33 mi (1,405.49 km) |
