| Redding to Mangualde | 5,489.15 mi (8,833.94 km) |
| Redding to Marco de Canavezes | 5,446.44 mi (8,765.20 km) |
| Redding to Marinha Grande | 5,487.28 mi (8,830.93 km) |
| Redding to Massama | 5,522.69 mi (8,887.92 km) |
| Redding to Matosinhos | 5,426.19 mi (8,732.61 km) |
| Redding to Mealhada | 5,474.47 mi (8,810.31 km) |
| Redding to Melgaco | 5,396.60 mi (8,684.98 km) |
| Redding to Melres | 5,442.94 mi (8,759.57 km) |
| Redding to Mira | 5,461.48 mi (8,789.41 km) |
| Redding to Miranda do Corvo | 5,492.68 mi (8,839.61 km) |
| Redding to Mirandela | 5,466.92 mi (8,798.16 km) |
| Redding to Mogadouro | 5,491.27 mi (8,837.34 km) |
| Redding to Moimenta da Beira | 5,476.10 mi (8,812.93 km) |
| Redding to Moita | 5,539.04 mi (8,914.22 km) |
| Redding to Moncao | 5,390.95 mi (8,675.90 km) |
