| Rancho San Diego to Montalegre | 5,600.23 mi (9,012.71 km) |
| Rancho San Diego to Montemor-o-Novo | 5,712.70 mi (9,193.71 km) |
| Rancho San Diego to Montemor-o-Velho | 5,630.52 mi (9,061.44 km) |
| Rancho San Diego to Montijo | 5,681.66 mi (9,143.75 km) |
| Rancho San Diego to Mortagua | 5,638.74 mi (9,074.68 km) |
| Rancho San Diego to Moura | 5,767.34 mi (9,281.63 km) |
| Rancho San Diego to Murtosa | 5,609.56 mi (9,027.72 km) |
| Rancho San Diego to Nazare | 5,637.13 mi (9,072.09 km) |
| Rancho San Diego to Nelas | 5,651.52 mi (9,095.24 km) |
| Rancho San Diego to Obidos | 5,643.02 mi (9,081.56 km) |
| Rancho San Diego to Odemira | 5,738.36 mi (9,234.99 km) |
| Rancho San Diego to Odivelas | 5,665.13 mi (9,117.14 km) |
| Rancho San Diego to Oeiras | 5,663.50 mi (9,114.51 km) |
| Rancho San Diego to Olhao | 5,796.28 mi (9,328.21 km) |
| Rancho San Diego to Oliveira de Azemeis | 5,611.90 mi (9,031.48 km) |
