| Helsinki to Montemor-o-Novo | 2,064.73 mi (3,322.87 km) |
| Helsinki to Montemor-o-Velho | 1,991.72 mi (3,205.37 km) |
| Helsinki to Montijo | 2,083.04 mi (3,352.33 km) |
| Helsinki to Mortagua | 1,963.05 mi (3,159.23 km) |
| Helsinki to Moura | 2,072.39 mi (3,335.20 km) |
| Helsinki to Murtosa | 1,958.19 mi (3,151.40 km) |
| Helsinki to Nazare | 2,035.49 mi (3,275.81 km) |
| Helsinki to Nelas | 1,946.82 mi (3,133.10 km) |
| Helsinki to Obidos | 2,052.03 mi (3,302.43 km) |
| Helsinki to Odemira | 2,138.99 mi (3,442.37 km) |
| Helsinki to Odivelas | 2,085.22 mi (3,355.84 km) |
| Helsinki to Oeiras | 2,095.47 mi (3,372.33 km) |
| Helsinki to Olhao | 2,148.69 mi (3,457.99 km) |
| Helsinki to Oliveira de Azemeis | 1,947.38 mi (3,134.01 km) |
| Helsinki to Oliveira de Frades | 1,945.51 mi (3,131.00 km) |
