| Olgiate Olona to Marco de Canavezes | 906.43 mi (1,458.76 km) |
| Olgiate Olona to Marinha Grande | 989.10 mi (1,591.80 km) |
| Olgiate Olona to Massama | 1,040.58 mi (1,674.66 km) |
| Olgiate Olona to Matosinhos | 932.28 mi (1,500.37 km) |
| Olgiate Olona to Mealhada | 945.45 mi (1,521.55 km) |
| Olgiate Olona to Melgaco | 886.09 mi (1,426.03 km) |
| Olgiate Olona to Melres | 921.65 mi (1,483.25 km) |
| Olgiate Olona to Mira | 956.97 mi (1,540.10 km) |
| Olgiate Olona to Miranda do Corvo | 949.50 mi (1,528.07 km) |
| Olgiate Olona to Mirandela | 852.10 mi (1,371.32 km) |
| Olgiate Olona to Mogadouro | 834.89 mi (1,343.62 km) |
| Olgiate Olona to Moimenta da Beira | 887.54 mi (1,428.36 km) |
| Olgiate Olona to Moita | 1,031.50 mi (1,660.04 km) |
| Olgiate Olona to Moncao | 897.36 mi (1,444.17 km) |
| Olgiate Olona to Montalegre | 871.30 mi (1,402.22 km) |
