| Grojec to Marco de Canavezes | 1,549.91 mi (2,494.34 km) |
| Grojec to Marinha Grande | 1,644.59 mi (2,646.71 km) |
| Grojec to Massama | 1,703.57 mi (2,741.64 km) |
| Grojec to Matosinhos | 1,572.40 mi (2,530.54 km) |
| Grojec to Mealhada | 1,596.87 mi (2,569.91 km) |
| Grojec to Melgaco | 1,515.58 mi (2,439.08 km) |
| Grojec to Melres | 1,565.12 mi (2,518.81 km) |
| Grojec to Mira | 1,606.17 mi (2,584.88 km) |
| Grojec to Miranda do Corvo | 1,604.70 mi (2,582.52 km) |
| Grojec to Mirandela | 1,497.54 mi (2,410.05 km) |
| Grojec to Mogadouro | 1,485.19 mi (2,390.18 km) |
| Grojec to Moimenta da Beira | 1,536.86 mi (2,473.34 km) |
| Grojec to Moita | 1,696.87 mi (2,730.85 km) |
| Grojec to Moncao | 1,526.16 mi (2,456.11 km) |
| Grojec to Montalegre | 1,508.19 mi (2,427.20 km) |
