| Shasta Lake to Mangualde | 5,484.24 mi (8,826.03 km) |
| Shasta Lake to Marco de Canavezes | 5,441.51 mi (8,757.26 km) |
| Shasta Lake to Marinha Grande | 5,482.50 mi (8,823.23 km) |
| Shasta Lake to Massama | 5,518.00 mi (8,880.37 km) |
| Shasta Lake to Matosinhos | 5,421.29 mi (8,724.72 km) |
| Shasta Lake to Mealhada | 5,469.62 mi (8,802.49 km) |
| Shasta Lake to Melgaco | 5,391.60 mi (8,676.95 km) |
| Shasta Lake to Melres | 5,438.03 mi (8,751.67 km) |
| Shasta Lake to Mira | 5,456.64 mi (8,781.61 km) |
| Shasta Lake to Miranda do Corvo | 5,487.83 mi (8,831.82 km) |
| Shasta Lake to Mirandela | 5,461.92 mi (8,790.11 km) |
| Shasta Lake to Mogadouro | 5,486.25 mi (8,829.26 km) |
| Shasta Lake to Moimenta da Beira | 5,471.16 mi (8,804.97 km) |
| Shasta Lake to Moita | 5,534.34 mi (8,906.66 km) |
| Shasta Lake to Moncao | 5,385.97 mi (8,667.89 km) |
