| Douai to Marco de Canavezes | 832.33 mi (1,339.51 km) |
| Douai to Marinha Grande | 936.87 mi (1,507.75 km) |
| Douai to Massama | 1,004.10 mi (1,615.94 km) |
| Douai to Matosinhos | 849.59 mi (1,367.28 km) |
| Douai to Mealhada | 886.35 mi (1,426.44 km) |
| Douai to Melgaco | 785.23 mi (1,263.71 km) |
| Douai to Melres | 846.56 mi (1,362.40 km) |
| Douai to Mira | 892.17 mi (1,435.81 km) |
| Douai to Miranda do Corvo | 898.98 mi (1,446.76 km) |
| Douai to Mirandela | 785.99 mi (1,264.93 km) |
| Douai to Mogadouro | 781.04 mi (1,256.97 km) |
| Douai to Moimenta da Beira | 827.48 mi (1,331.70 km) |
| Douai to Moita | 1,001.86 mi (1,612.33 km) |
| Douai to Moncao | 794.53 mi (1,278.67 km) |
| Douai to Montalegre | 785.88 mi (1,264.75 km) |
