| Philadelphia to Montalegre | 3,424.60 mi (5,511.36 km) |
| Philadelphia to Montemor-o-Novo | 3,489.34 mi (5,615.55 km) |
| Philadelphia to Montemor-o-Velho | 3,424.88 mi (5,511.81 km) |
| Philadelphia to Montijo | 3,454.71 mi (5,559.82 km) |
| Philadelphia to Mortagua | 3,439.65 mi (5,535.58 km) |
| Philadelphia to Moura | 3,541.89 mi (5,700.13 km) |
| Philadelphia to Murtosa | 3,412.33 mi (5,491.61 km) |
| Philadelphia to Nazare | 3,421.36 mi (5,506.15 km) |
| Philadelphia to Nelas | 3,456.01 mi (5,561.90 km) |
| Philadelphia to Obidos | 3,423.44 mi (5,509.50 km) |
| Philadelphia to Odemira | 3,499.14 mi (5,631.32 km) |
| Philadelphia to Odivelas | 3,437.94 mi (5,532.82 km) |
| Philadelphia to Oeiras | 3,434.13 mi (5,526.70 km) |
| Philadelphia to Olhao | 3,554.89 mi (5,721.04 km) |
| Philadelphia to Oliveira de Azemeis | 3,417.20 mi (5,499.45 km) |
