| Trnava to Mangualde | 1,351.90 mi (2,175.67 km) |
| Trnava to Marco de Canavezes | 1,348.63 mi (2,170.41 km) |
| Trnava to Marinha Grande | 1,435.83 mi (2,310.74 km) |
| Trnava to Massama | 1,489.56 mi (2,397.22 km) |
| Trnava to Matosinhos | 1,373.35 mi (2,210.19 km) |
| Trnava to Mealhada | 1,390.69 mi (2,238.09 km) |
| Trnava to Melgaco | 1,322.49 mi (2,128.35 km) |
| Trnava to Melres | 1,363.93 mi (2,195.03 km) |
| Trnava to Mira | 1,401.50 mi (2,255.50 km) |
| Trnava to Miranda do Corvo | 1,395.99 mi (2,246.63 km) |
| Trnava to Mirandela | 1,294.71 mi (2,083.63 km) |
| Trnava to Mogadouro | 1,279.19 mi (2,058.66 km) |
| Trnava to Moimenta da Beira | 1,331.78 mi (2,143.29 km) |
| Trnava to Moita | 1,481.03 mi (2,383.49 km) |
| Trnava to Moncao | 1,333.56 mi (2,146.16 km) |
