| Willow Grove to Mangualde | 3,453.28 mi (5,557.52 km) |
| Willow Grove to Marco de Canavezes | 3,419.16 mi (5,502.60 km) |
| Willow Grove to Marinha Grande | 3,419.38 mi (5,502.96 km) |
| Willow Grove to Massama | 3,429.90 mi (5,519.89 km) |
| Willow Grove to Matosinhos | 3,392.67 mi (5,459.98 km) |
| Willow Grove to Mealhada | 3,425.85 mi (5,513.37 km) |
| Willow Grove to Melgaco | 3,389.52 mi (5,454.91 km) |
| Willow Grove to Melres | 3,410.17 mi (5,488.14 km) |
| Willow Grove to Mira | 3,410.77 mi (5,489.10 km) |
| Willow Grove to Miranda do Corvo | 3,439.15 mi (5,534.77 km) |
| Willow Grove to Mirandela | 3,457.67 mi (5,564.58 km) |
| Willow Grove to Mogadouro | 3,483.95 mi (5,606.88 km) |
| Willow Grove to Moimenta da Beira | 3,450.35 mi (5,552.80 km) |
| Willow Grove to Moita | 3,447.26 mi (5,547.83 km) |
| Willow Grove to Moncao | 3,380.44 mi (5,440.30 km) |
