| Upton to Mangualde | 909.49 mi (1,463.68 km) |
| Upton to Marco de Canavezes | 875.11 mi (1,408.35 km) |
| Upton to Marinha Grande | 981.18 mi (1,579.06 km) |
| Upton to Massama | 1,052.19 mi (1,693.34 km) |
| Upton to Matosinhos | 882.30 mi (1,419.92 km) |
| Upton to Mealhada | 932.53 mi (1,500.76 km) |
| Upton to Melgaco | 814.19 mi (1,310.32 km) |
| Upton to Melres | 886.09 mi (1,426.03 km) |
| Upton to Mira | 932.82 mi (1,501.24 km) |
| Upton to Miranda do Corvo | 950.12 mi (1,529.08 km) |
| Upton to Mirandela | 843.68 mi (1,357.77 km) |
| Upton to Mogadouro | 849.45 mi (1,367.05 km) |
| Upton to Moimenta da Beira | 882.50 mi (1,420.24 km) |
| Upton to Moita | 1,055.61 mi (1,698.85 km) |
| Upton to Moncao | 820.01 mi (1,319.67 km) |
