| Allentown to Montalegre | 3,423.57 mi (5,509.71 km) |
| Allentown to Montemor-o-Novo | 3,491.39 mi (5,618.85 km) |
| Allentown to Montemor-o-Velho | 3,425.67 mi (5,513.09 km) |
| Allentown to Montijo | 3,456.95 mi (5,563.43 km) |
| Allentown to Mortagua | 3,440.06 mi (5,536.24 km) |
| Allentown to Moura | 3,544.16 mi (5,703.78 km) |
| Allentown to Murtosa | 3,412.58 mi (5,492.01 km) |
| Allentown to Nazare | 3,422.80 mi (5,508.47 km) |
| Allentown to Nelas | 3,456.22 mi (5,562.25 km) |
| Allentown to Obidos | 3,425.14 mi (5,512.23 km) |
| Allentown to Odemira | 3,502.30 mi (5,636.40 km) |
| Allentown to Odivelas | 3,440.17 mi (5,536.42 km) |
| Allentown to Oeiras | 3,436.51 mi (5,530.53 km) |
| Allentown to Olhao | 3,558.28 mi (5,726.49 km) |
| Allentown to Oliveira de Azemeis | 3,417.30 mi (5,499.61 km) |
