| Trinity to Mangualde | 4,228.63 mi (6,805.32 km) |
| Trinity to Marco de Canavezes | 4,199.51 mi (6,758.46 km) |
| Trinity to Marinha Grande | 4,182.50 mi (6,731.08 km) |
| Trinity to Massama | 4,181.14 mi (6,728.89 km) |
| Trinity to Matosinhos | 4,171.66 mi (6,713.63 km) |
| Trinity to Mealhada | 4,197.06 mi (6,754.52 km) |
| Trinity to Melgaco | 4,179.15 mi (6,725.69 km) |
| Trinity to Melres | 4,188.69 mi (6,741.05 km) |
| Trinity to Mira | 4,181.76 mi (6,729.90 km) |
| Trinity to Miranda do Corvo | 4,207.66 mi (6,771.58 km) |
| Trinity to Mirandela | 4,243.51 mi (6,829.26 km) |
| Trinity to Mogadouro | 4,269.42 mi (6,870.96 km) |
| Trinity to Moimenta da Beira | 4,229.96 mi (6,807.46 km) |
| Trinity to Moita | 4,198.18 mi (6,756.31 km) |
| Trinity to Moncao | 4,169.13 mi (6,709.57 km) |
