| San Marcos to Montalegre | 5,592.68 mi (9,000.55 km) |
| San Marcos to Montemor-o-Novo | 5,706.54 mi (9,183.79 km) |
| San Marcos to Montemor-o-Velho | 5,623.84 mi (9,050.70 km) |
| San Marcos to Montijo | 5,675.65 mi (9,134.07 km) |
| San Marcos to Mortagua | 5,631.86 mi (9,063.60 km) |
| San Marcos to Moura | 5,761.20 mi (9,271.76 km) |
| San Marcos to Murtosa | 5,602.64 mi (9,016.58 km) |
| San Marcos to Nazare | 5,630.78 mi (9,061.87 km) |
| San Marcos to Nelas | 5,644.51 mi (9,083.96 km) |
| San Marcos to Obidos | 5,636.79 mi (9,071.54 km) |
| San Marcos to Odemira | 5,732.73 mi (9,225.94 km) |
| San Marcos to Odivelas | 5,659.14 mi (9,107.50 km) |
| San Marcos to Oeiras | 5,657.58 mi (9,105.00 km) |
| San Marcos to Olhao | 5,790.69 mi (9,319.22 km) |
| San Marcos to Oliveira de Azemeis | 5,604.90 mi (9,020.22 km) |
