| Marshfield to Montalegre | 3,964.82 mi (6,380.77 km) |
| Marshfield to Montemor-o-Novo | 4,068.58 mi (6,547.75 km) |
| Marshfield to Montemor-o-Velho | 3,989.10 mi (6,419.83 km) |
| Marshfield to Montijo | 4,036.91 mi (6,496.77 km) |
| Marshfield to Mortagua | 3,998.59 mi (6,435.11 km) |
| Marshfield to Moura | 4,123.06 mi (6,635.43 km) |
| Marshfield to Murtosa | 3,969.64 mi (6,388.52 km) |
| Marshfield to Nazare | 3,993.98 mi (6,427.68 km) |
| Marshfield to Nelas | 4,012.13 mi (6,456.90 km) |
| Marshfield to Obidos | 3,999.27 mi (6,436.20 km) |
| Marshfield to Odemira | 4,092.10 mi (6,585.61 km) |
| Marshfield to Odivelas | 4,020.29 mi (6,470.03 km) |
| Marshfield to Oeiras | 4,018.35 mi (6,466.90 km) |
| Marshfield to Olhao | 4,149.89 mi (6,678.61 km) |
| Marshfield to Oliveira de Azemeis | 3,972.49 mi (6,393.11 km) |
