| Biarritz to Marco de Canavezes | 371.99 mi (598.65 km) |
| Biarritz to Marinha Grande | 459.59 mi (739.64 km) |
| Biarritz to Massama | 517.06 mi (832.13 km) |
| Biarritz to Matosinhos | 397.55 mi (639.79 km) |
| Biarritz to Mealhada | 413.56 mi (665.56 km) |
| Biarritz to Melgaco | 352.70 mi (567.62 km) |
| Biarritz to Melres | 387.25 mi (623.22 km) |
| Biarritz to Mira | 424.23 mi (682.73 km) |
| Biarritz to Miranda do Corvo | 419.65 mi (675.36 km) |
| Biarritz to Mirandela | 317.79 mi (511.44 km) |
| Biarritz to Mogadouro | 301.93 mi (485.91 km) |
| Biarritz to Moimenta da Beira | 354.50 mi (570.51 km) |
| Biarritz to Moita | 510.42 mi (821.45 km) |
| Biarritz to Moncao | 364.03 mi (585.85 km) |
| Biarritz to Montalegre | 336.63 mi (541.76 km) |
