| Calera to Mangualde | 4,249.23 mi (6,838.48 km) |
| Calera to Marco de Canavezes | 4,216.22 mi (6,785.34 km) |
| Calera to Marinha Grande | 4,212.12 mi (6,778.75 km) |
| Calera to Massama | 4,219.33 mi (6,790.36 km) |
| Calera to Matosinhos | 4,189.35 mi (6,742.11 km) |
| Calera to Mealhada | 4,220.71 mi (6,792.58 km) |
| Calera to Melgaco | 4,188.56 mi (6,740.84 km) |
| Calera to Melres | 4,206.78 mi (6,770.16 km) |
| Calera to Mira | 4,205.54 mi (6,768.16 km) |
| Calera to Miranda do Corvo | 4,233.36 mi (6,812.93 km) |
| Calera to Mirandela | 4,256.04 mi (6,849.43 km) |
| Calera to Mogadouro | 4,282.29 mi (6,891.68 km) |
| Calera to Moimenta da Beira | 4,247.30 mi (6,835.37 km) |
| Calera to Moita | 4,236.65 mi (6,818.23 km) |
| Calera to Moncao | 4,179.27 mi (6,725.88 km) |
