| Effingham to Mangualde | 4,123.07 mi (6,635.44 km) |
| Effingham to Marco de Canavezes | 4,086.70 mi (6,576.91 km) |
| Effingham to Marinha Grande | 4,095.35 mi (6,590.82 km) |
| Effingham to Massama | 4,110.94 mi (6,615.92 km) |
| Effingham to Matosinhos | 4,061.19 mi (6,535.85 km) |
| Effingham to Mealhada | 4,097.95 mi (6,595.01 km) |
| Effingham to Melgaco | 4,052.32 mi (6,521.58 km) |
| Effingham to Melres | 4,078.76 mi (6,564.12 km) |
| Effingham to Mira | 4,083.11 mi (6,571.13 km) |
| Effingham to Miranda do Corvo | 4,112.41 mi (6,618.29 km) |
| Effingham to Mirandela | 4,121.89 mi (6,633.54 km) |
| Effingham to Mogadouro | 4,148.11 mi (6,675.74 km) |
| Effingham to Moimenta da Beira | 4,117.98 mi (6,627.24 km) |
| Effingham to Moita | 4,128.29 mi (6,643.84 km) |
| Effingham to Moncao | 4,043.86 mi (6,507.96 km) |
