| Sun Prairie to Mangualde | 4,018.95 mi (6,467.87 km) |
| Sun Prairie to Marco de Canavezes | 3,980.65 mi (6,406.23 km) |
| Sun Prairie to Marinha Grande | 3,997.62 mi (6,433.55 km) |
| Sun Prairie to Massama | 4,018.62 mi (6,467.35 km) |
| Sun Prairie to Matosinhos | 3,956.22 mi (6,366.92 km) |
| Sun Prairie to Mealhada | 3,996.25 mi (6,431.34 km) |
| Sun Prairie to Melgaco | 3,942.11 mi (6,344.21 km) |
| Sun Prairie to Melres | 3,973.75 mi (6,395.13 km) |
| Sun Prairie to Mira | 3,981.75 mi (6,408.01 km) |
| Sun Prairie to Miranda do Corvo | 4,011.81 mi (6,456.39 km) |
| Sun Prairie to Mirandela | 4,012.52 mi (6,457.53 km) |
| Sun Prairie to Mogadouro | 4,038.54 mi (6,499.39 km) |
| Sun Prairie to Moimenta da Beira | 4,011.81 mi (6,456.39 km) |
| Sun Prairie to Moita | 4,035.85 mi (6,495.07 km) |
| Sun Prairie to Moncao | 3,934.26 mi (6,331.58 km) |
