| San Mateo to Montalegre | 5,577.32 mi (8,975.83 km) |
| San Mateo to Montemor-o-Novo | 5,710.74 mi (9,190.55 km) |
| San Mateo to Montemor-o-Velho | 5,621.13 mi (9,046.33 km) |
| San Mateo to Montijo | 5,682.19 mi (9,144.60 km) |
| San Mateo to Mortagua | 5,625.99 mi (9,054.16 km) |
| San Mateo to Moura | 5,765.44 mi (9,278.58 km) |
| San Mateo to Murtosa | 5,596.51 mi (9,006.71 km) |
| San Mateo to Nazare | 5,632.70 mi (9,064.95 km) |
| San Mateo to Nelas | 5,636.78 mi (9,071.52 km) |
| San Mateo to Obidos | 5,640.42 mi (9,077.39 km) |
| San Mateo to Odemira | 5,744.53 mi (9,244.93 km) |
| San Mateo to Odivelas | 5,666.10 mi (9,118.70 km) |
| San Mateo to Oeiras | 5,665.66 mi (9,118.00 km) |
| San Mateo to Olhao | 5,802.63 mi (9,338.43 km) |
| San Mateo to Oliveira de Azemeis | 5,597.59 mi (9,008.45 km) |
