| Penafiel to Marysville (California) | 5,481.12 mi (8,821.01 km) |
| Penafiel to Marysville (Ohio) | 3,801.05 mi (6,117.19 km) |
| Penafiel to Marysville (Washington) | 5,066.98 mi (8,154.51 km) |
| Penafiel to Maryville (Missouri) | 4,323.43 mi (6,957.89 km) |
| Penafiel to Maryville (Tennessee) | 3,980.24 mi (6,405.58 km) |
| Penafiel to Mason (Ohio) | 3,873.44 mi (6,233.70 km) |
| Penafiel to Mason City (Iowa) | 4,149.38 mi (6,677.79 km) |
| Penafiel to Massapequa (New York) | 3,318.33 mi (5,340.33 km) |
| Penafiel to Massapequa Park (New York) | 3,316.93 mi (5,338.09 km) |
| Penafiel to Massillon (Ohio) | 3,697.75 mi (5,950.95 km) |
| Penafiel to Mastic (New York) | 3,284.49 mi (5,285.88 km) |
| Penafiel to Mastic Beach (New York) | 3,285.13 mi (5,286.90 km) |
| Penafiel to Matteson (Illinois) | 3,961.94 mi (6,376.13 km) |
| Penafiel to Matthews (North Carolina) | 3,842.46 mi (6,183.84 km) |
| Penafiel to Mattoon (Illinois) | 4,058.71 mi (6,531.86 km) |
