| Reston to Montalegre | 3,562.72 mi (5,733.64 km) |
| Reston to Montemor-o-Novo | 3,626.20 mi (5,835.81 km) |
| Reston to Montemor-o-Velho | 3,562.33 mi (5,733.02 km) |
| Reston to Montijo | 3,591.48 mi (5,779.92 km) |
| Reston to Mortagua | 3,577.26 mi (5,757.05 km) |
| Reston to Moura | 3,678.64 mi (5,920.20 km) |
| Reston to Murtosa | 3,550.01 mi (5,713.18 km) |
| Reston to Nazare | 3,558.52 mi (5,726.89 km) |
| Reston to Nelas | 3,593.69 mi (5,783.49 km) |
| Reston to Obidos | 3,560.49 mi (5,730.05 km) |
| Reston to Odemira | 3,635.39 mi (5,850.59 km) |
| Reston to Odivelas | 3,574.71 mi (5,752.93 km) |
| Reston to Oeiras | 3,570.83 mi (5,746.69 km) |
| Reston to Olhao | 3,691.00 mi (5,940.08 km) |
| Reston to Oliveira de Azemeis | 3,554.93 mi (5,721.11 km) |
