| Waltham to Mangualde | 3,208.58 mi (5,163.72 km) |
| Waltham to Marco de Canavezes | 3,173.81 mi (5,107.75 km) |
| Waltham to Marinha Grande | 3,176.59 mi (5,112.22 km) |
| Waltham to Massama | 3,188.95 mi (5,132.13 km) |
| Waltham to Matosinhos | 3,147.57 mi (5,065.53 km) |
| Waltham to Mealhada | 3,181.82 mi (5,120.64 km) |
| Waltham to Melgaco | 3,142.94 mi (5,058.07 km) |
| Waltham to Melres | 3,165.10 mi (5,093.74 km) |
| Waltham to Mira | 3,166.80 mi (5,096.47 km) |
| Waltham to Miranda do Corvo | 3,195.49 mi (5,142.64 km) |
| Waltham to Mirandela | 3,211.48 mi (5,168.37 km) |
| Waltham to Mogadouro | 3,237.76 mi (5,210.68 km) |
| Waltham to Moimenta da Beira | 3,205.04 mi (5,158.02 km) |
| Waltham to Moita | 3,206.32 mi (5,160.07 km) |
| Waltham to Moncao | 3,134.00 mi (5,043.69 km) |
