| Chapel Hill to Mangualde | 3,772.83 mi (6,071.78 km) |
| Chapel Hill to Marco de Canavezes | 3,740.31 mi (6,019.45 km) |
| Chapel Hill to Marinha Grande | 3,734.64 mi (6,010.32 km) |
| Chapel Hill to Massama | 3,741.08 mi (6,020.69 km) |
| Chapel Hill to Matosinhos | 3,713.29 mi (5,975.96 km) |
| Chapel Hill to Mealhada | 3,743.91 mi (6,025.24 km) |
| Chapel Hill to Melgaco | 3,713.73 mi (5,976.68 km) |
| Chapel Hill to Melres | 3,730.68 mi (6,003.95 km) |
| Chapel Hill to Mira | 3,728.71 mi (6,000.78 km) |
| Chapel Hill to Miranda do Corvo | 3,756.32 mi (6,045.21 km) |
| Chapel Hill to Mirandela | 3,780.78 mi (6,084.59 km) |
| Chapel Hill to Mogadouro | 3,807.01 mi (6,126.79 km) |
| Chapel Hill to Moimenta da Beira | 3,771.34 mi (6,069.38 km) |
| Chapel Hill to Moita | 3,758.39 mi (6,048.54 km) |
| Chapel Hill to Moncao | 3,704.31 mi (5,961.52 km) |
