| Oswego to Montalegre | 3,984.24 mi (6,412.02 km) |
| Oswego to Montemor-o-Novo | 4,074.76 mi (6,557.70 km) |
| Oswego to Montemor-o-Velho | 4,000.32 mi (6,437.89 km) |
| Oswego to Montijo | 4,041.89 mi (6,504.80 km) |
| Oswego to Mortagua | 4,011.70 mi (6,456.21 km) |
| Oswego to Moura | 4,128.76 mi (6,644.59 km) |
| Oswego to Murtosa | 3,983.20 mi (6,410.34 km) |
| Oswego to Nazare | 4,002.24 mi (6,440.98 km) |
| Oswego to Nelas | 4,026.28 mi (6,479.67 km) |
| Oswego to Obidos | 4,006.40 mi (6,447.68 km) |
| Oswego to Odemira | 4,093.36 mi (6,587.63 km) |
| Oswego to Odivelas | 4,025.15 mi (6,477.85 km) |
| Oswego to Oeiras | 4,022.52 mi (6,473.63 km) |
| Oswego to Olhao | 4,150.61 mi (6,679.76 km) |
| Oswego to Oliveira de Azemeis | 3,986.76 mi (6,416.07 km) |
