| Delaware to Montalegre | 3,790.39 mi (6,100.04 km) |
| Delaware to Montemor-o-Novo | 3,867.94 mi (6,224.86 km) |
| Delaware to Montemor-o-Velho | 3,798.50 mi (6,113.10 km) |
| Delaware to Montijo | 3,834.10 mi (6,170.39 km) |
| Delaware to Mortagua | 3,811.63 mi (6,134.23 km) |
| Delaware to Moura | 3,921.29 mi (6,310.70 km) |
| Delaware to Murtosa | 3,783.67 mi (6,089.24 km) |
| Delaware to Nazare | 3,797.64 mi (6,111.70 km) |
| Delaware to Nelas | 3,827.15 mi (6,159.20 km) |
| Delaware to Obidos | 3,800.74 mi (6,116.69 km) |
| Delaware to Odemira | 3,881.98 mi (6,247.44 km) |
| Delaware to Odivelas | 3,817.32 mi (6,143.38 km) |
| Delaware to Oeiras | 3,814.07 mi (6,138.16 km) |
| Delaware to Olhao | 3,938.53 mi (6,338.45 km) |
| Delaware to Oliveira de Azemeis | 3,787.91 mi (6,096.05 km) |
