| Marshalltown to Montalegre | 4,174.67 mi (6,718.48 km) |
| Marshalltown to Montemor-o-Novo | 4,273.02 mi (6,876.75 km) |
| Marshalltown to Montemor-o-Velho | 4,195.65 mi (6,752.24 km) |
| Marshalltown to Montijo | 4,240.80 mi (6,824.90 km) |
| Marshalltown to Mortagua | 4,205.93 mi (6,768.80 km) |
| Marshalltown to Moura | 4,327.31 mi (6,964.14 km) |
| Marshalltown to Murtosa | 4,177.15 mi (6,722.47 km) |
| Marshalltown to Nazare | 4,199.27 mi (6,758.08 km) |
| Marshalltown to Nelas | 4,219.91 mi (6,791.28 km) |
| Marshalltown to Obidos | 4,204.08 mi (6,765.81 km) |
| Marshalltown to Odemira | 4,294.35 mi (6,911.08 km) |
| Marshalltown to Odivelas | 4,224.12 mi (6,798.06 km) |
| Marshalltown to Oeiras | 4,221.87 mi (6,794.44 km) |
| Marshalltown to Olhao | 4,351.92 mi (7,003.74 km) |
| Marshalltown to Oliveira de Azemeis | 4,180.29 mi (6,727.53 km) |
