| Storrs to Mangualde | 3,271.20 mi (5,264.49 km) |
| Storrs to Marco de Canavezes | 3,236.61 mi (5,208.82 km) |
| Storrs to Marinha Grande | 3,238.66 mi (5,212.11 km) |
| Storrs to Massama | 3,250.50 mi (5,231.17 km) |
| Storrs to Matosinhos | 3,210.30 mi (5,166.48 km) |
| Storrs to Mealhada | 3,244.24 mi (5,221.10 km) |
| Storrs to Melgaco | 3,206.10 mi (5,159.71 km) |
| Storrs to Melres | 3,227.82 mi (5,194.68 km) |
| Storrs to Mira | 3,229.21 mi (5,196.90 km) |
| Storrs to Miranda do Corvo | 3,257.80 mi (5,242.93 km) |
| Storrs to Mirandela | 3,274.53 mi (5,269.84 km) |
| Storrs to Mogadouro | 3,300.81 mi (5,312.14 km) |
| Storrs to Moimenta da Beira | 3,267.83 mi (5,259.07 km) |
| Storrs to Moita | 3,267.86 mi (5,259.11 km) |
| Storrs to Moncao | 3,197.12 mi (5,145.26 km) |
