| Chippenham to Mangualde | 796.78 mi (1,282.29 km) |
| Chippenham to Marco de Canavezes | 765.49 mi (1,231.94 km) |
| Chippenham to Marinha Grande | 872.62 mi (1,404.35 km) |
| Chippenham to Massama | 943.41 mi (1,518.27 km) |
| Chippenham to Matosinhos | 775.62 mi (1,248.24 km) |
| Chippenham to Mealhada | 822.82 mi (1,324.21 km) |
| Chippenham to Melgaco | 707.43 mi (1,138.50 km) |
| Chippenham to Melres | 777.55 mi (1,251.34 km) |
| Chippenham to Mira | 824.64 mi (1,327.14 km) |
| Chippenham to Miranda do Corvo | 839.31 mi (1,350.74 km) |
| Chippenham to Mirandela | 729.61 mi (1,174.19 km) |
| Chippenham to Mogadouro | 732.78 mi (1,179.30 km) |
| Chippenham to Moimenta da Beira | 769.72 mi (1,238.74 km) |
| Chippenham to Moita | 945.33 mi (1,521.37 km) |
| Chippenham to Moncao | 714.36 mi (1,149.65 km) |
