| Radviliskis to Marco de Canavezes | 1,743.96 mi (2,806.63 km) |
| Radviliskis to Marinha Grande | 1,844.45 mi (2,968.36 km) |
| Radviliskis to Massama | 1,907.87 mi (3,070.42 km) |
| Radviliskis to Matosinhos | 1,763.82 mi (2,838.59 km) |
| Radviliskis to Mealhada | 1,794.93 mi (2,888.67 km) |
| Radviliskis to Melgaco | 1,702.24 mi (2,739.50 km) |
| Radviliskis to Melres | 1,758.78 mi (2,830.49 km) |
| Radviliskis to Mira | 1,802.56 mi (2,900.94 km) |
| Radviliskis to Miranda do Corvo | 1,805.17 mi (2,905.14 km) |
| Radviliskis to Mirandela | 1,694.12 mi (2,726.43 km) |
| Radviliskis to Mogadouro | 1,685.13 mi (2,711.95 km) |
| Radviliskis to Moimenta da Beira | 1,734.91 mi (2,792.06 km) |
| Radviliskis to Moita | 1,903.14 mi (3,062.81 km) |
| Radviliskis to Moncao | 1,712.13 mi (2,755.40 km) |
| Radviliskis to Montalegre | 1,699.35 mi (2,734.84 km) |
