| Byala Slatina to Marco de Canavezes | 1,636.30 mi (2,633.38 km) |
| Byala Slatina to Marinha Grande | 1,705.92 mi (2,745.41 km) |
| Byala Slatina to Massama | 1,747.03 mi (2,811.58 km) |
| Byala Slatina to Matosinhos | 1,663.75 mi (2,677.54 km) |
| Byala Slatina to Mealhada | 1,667.64 mi (2,683.81 km) |
| Byala Slatina to Melgaco | 1,625.10 mi (2,615.35 km) |
| Byala Slatina to Melres | 1,651.07 mi (2,657.13 km) |
| Byala Slatina to Mira | 1,680.75 mi (2,704.90 km) |
| Byala Slatina to Miranda do Corvo | 1,667.97 mi (2,684.35 km) |
| Byala Slatina to Mirandela | 1,582.28 mi (2,546.43 km) |
| Byala Slatina to Mogadouro | 1,561.89 mi (2,513.62 km) |
| Byala Slatina to Moimenta da Beira | 1,613.51 mi (2,596.70 km) |
| Byala Slatina to Moita | 1,735.13 mi (2,792.42 km) |
| Byala Slatina to Moncao | 1,636.44 mi (2,633.59 km) |
| Byala Slatina to Montalegre | 1,606.58 mi (2,585.54 km) |
