| Stevenage to Mangualde | 858.97 mi (1,382.38 km) |
| Stevenage to Marco de Canavezes | 830.17 mi (1,336.03 km) |
| Stevenage to Marinha Grande | 937.39 mi (1,508.59 km) |
| Stevenage to Massama | 1,007.68 mi (1,621.70 km) |
| Stevenage to Matosinhos | 842.21 mi (1,355.41 km) |
| Stevenage to Mealhada | 887.08 mi (1,427.61 km) |
| Stevenage to Melgaco | 774.44 mi (1,246.34 km) |
| Stevenage to Melres | 842.88 mi (1,356.49 km) |
| Stevenage to Mira | 889.95 mi (1,432.23 km) |
| Stevenage to Miranda do Corvo | 902.67 mi (1,452.70 km) |
| Stevenage to Mirandela | 791.20 mi (1,273.31 km) |
| Stevenage to Mogadouro | 792.18 mi (1,274.89 km) |
| Stevenage to Moimenta da Beira | 832.04 mi (1,339.03 km) |
| Stevenage to Moita | 1,008.53 mi (1,623.07 km) |
| Stevenage to Moncao | 782.03 mi (1,258.56 km) |
