| Otley to Mangualde | 961.25 mi (1,546.99 km) |
| Otley to Marco de Canavezes | 928.28 mi (1,493.92 km) |
| Otley to Marinha Grande | 1,034.96 mi (1,665.60 km) |
| Otley to Massama | 1,105.94 mi (1,779.84 km) |
| Otley to Matosinhos | 936.75 mi (1,507.56 km) |
| Otley to Mealhada | 985.74 mi (1,586.39 km) |
| Otley to Melgaco | 868.50 mi (1,397.72 km) |
| Otley to Melres | 939.76 mi (1,512.39 km) |
| Otley to Mira | 986.71 mi (1,587.96 km) |
| Otley to Miranda do Corvo | 1,002.84 mi (1,613.92 km) |
| Otley to Mirandela | 894.68 mi (1,439.85 km) |
| Otley to Mogadouro | 899.08 mi (1,446.92 km) |
| Otley to Moimenta da Beira | 934.19 mi (1,503.44 km) |
| Otley to Moita | 1,108.69 mi (1,784.26 km) |
| Otley to Moncao | 874.79 mi (1,407.83 km) |
