| Tarquinia to Marco de Canavezes | 1,026.94 mi (1,652.71 km) |
| Tarquinia to Marinha Grande | 1,089.81 mi (1,753.88 km) |
| Tarquinia to Massama | 1,127.83 mi (1,815.06 km) |
| Tarquinia to Matosinhos | 1,055.04 mi (1,697.92 km) |
| Tarquinia to Mealhada | 1,053.96 mi (1,696.18 km) |
| Tarquinia to Melgaco | 1,022.81 mi (1,646.05 km) |
| Tarquinia to Melres | 1,041.25 mi (1,675.73 km) |
| Tarquinia to Mira | 1,067.64 mi (1,718.20 km) |
| Tarquinia to Miranda do Corvo | 1,052.78 mi (1,694.28 km) |
| Tarquinia to Mirandela | 973.83 mi (1,567.23 km) |
| Tarquinia to Mogadouro | 951.85 mi (1,531.85 km) |
| Tarquinia to Moimenta da Beira | 1,002.23 mi (1,612.93 km) |
| Tarquinia to Moita | 1,115.42 mi (1,795.10 km) |
| Tarquinia to Moncao | 1,034.04 mi (1,664.13 km) |
| Tarquinia to Montalegre | 1,001.37 mi (1,611.55 km) |
