| Steubenville to Mangualde | 3,711.85 mi (5,973.65 km) |
| Steubenville to Marco de Canavezes | 3,676.47 mi (5,916.71 km) |
| Steubenville to Marinha Grande | 3,681.34 mi (5,924.54 km) |
| Steubenville to Massama | 3,694.72 mi (5,946.07 km) |
| Steubenville to Matosinhos | 3,650.49 mi (5,874.90 km) |
| Steubenville to Mealhada | 3,685.67 mi (5,931.51 km) |
| Steubenville to Melgaco | 3,644.24 mi (5,864.83 km) |
| Steubenville to Melres | 3,668.05 mi (5,903.15 km) |
| Steubenville to Mira | 3,670.71 mi (5,907.44 km) |
| Steubenville to Miranda do Corvo | 3,699.62 mi (5,953.96 km) |
| Steubenville to Mirandela | 3,713.21 mi (5,975.84 km) |
| Steubenville to Mogadouro | 3,739.49 mi (6,018.12 km) |
| Steubenville to Moimenta da Beira | 3,707.73 mi (5,967.02 km) |
| Steubenville to Moita | 3,712.08 mi (5,974.01 km) |
| Steubenville to Moncao | 3,635.48 mi (5,850.74 km) |
