| Monroe to Montalegre | 4,497.97 mi (7,238.79 km) |
| Monroe to Montemor-o-Novo | 4,562.60 mi (7,342.79 km) |
| Monroe to Montemor-o-Velho | 4,498.70 mi (7,239.97 km) |
| Monroe to Montijo | 4,527.82 mi (7,286.83 km) |
| Monroe to Mortagua | 4,513.50 mi (7,263.78 km) |
| Monroe to Moura | 4,614.97 mi (7,427.08 km) |
| Monroe to Murtosa | 4,486.17 mi (7,219.80 km) |
| Monroe to Nazare | 4,494.98 mi (7,233.98 km) |
| Monroe to Nelas | 4,529.85 mi (7,290.09 km) |
| Monroe to Obidos | 4,496.94 mi (7,237.12 km) |
| Monroe to Odemira | 4,571.29 mi (7,356.79 km) |
| Monroe to Odivelas | 4,511.06 mi (7,259.85 km) |
| Monroe to Oeiras | 4,507.13 mi (7,253.53 km) |
| Monroe to Olhao | 4,626.72 mi (7,445.99 km) |
| Monroe to Oliveira de Azemeis | 4,491.03 mi (7,227.61 km) |
