| Union Hill-Novelty Hill to Mangualde | 5,131.49 mi (8,258.33 km) |
| Union Hill-Novelty Hill to Marco de Canavezes | 5,087.74 mi (8,187.92 km) |
| Union Hill-Novelty Hill to Marinha Grande | 5,137.18 mi (8,267.50 km) |
| Union Hill-Novelty Hill to Massama | 5,177.99 mi (8,333.16 km) |
| Union Hill-Novelty Hill to Matosinhos | 5,069.34 mi (8,158.31 km) |
| Union Hill-Novelty Hill to Mealhada | 5,120.07 mi (8,239.95 km) |
| Union Hill-Novelty Hill to Melgaco | 5,034.48 mi (8,102.22 km) |
| Union Hill-Novelty Hill to Melres | 5,085.56 mi (8,184.41 km) |
| Union Hill-Novelty Hill to Mira | 5,107.84 mi (8,220.28 km) |
| Union Hill-Novelty Hill to Miranda do Corvo | 5,139.04 mi (8,270.48 km) |
| Union Hill-Novelty Hill to Mirandela | 5,103.78 mi (8,213.74 km) |
| Union Hill-Novelty Hill to Mogadouro | 5,127.18 mi (8,251.40 km) |
| Union Hill-Novelty Hill to Moimenta da Beira | 5,116.42 mi (8,234.08 km) |
| Union Hill-Novelty Hill to Moita | 5,193.73 mi (8,358.51 km) |
| Union Hill-Novelty Hill to Moncao | 5,029.72 mi (8,094.55 km) |
