| Onalaska to Montalegre | 4,035.60 mi (6,494.68 km) |
| Onalaska to Montemor-o-Novo | 4,137.99 mi (6,659.45 km) |
| Onalaska to Montemor-o-Velho | 4,059.05 mi (6,532.40 km) |
| Onalaska to Montijo | 4,106.17 mi (6,608.25 km) |
| Onalaska to Mortagua | 4,068.75 mi (6,548.01 km) |
| Onalaska to Moura | 4,192.43 mi (6,747.06 km) |
| Onalaska to Murtosa | 4,039.83 mi (6,501.49 km) |
| Onalaska to Nazare | 4,063.60 mi (6,539.74 km) |
| Onalaska to Nelas | 4,082.39 mi (6,569.98 km) |
| Onalaska to Obidos | 4,068.77 mi (6,548.05 km) |
| Onalaska to Odemira | 4,160.94 mi (6,696.39 km) |
| Onalaska to Odivelas | 4,089.54 mi (6,581.47 km) |
| Onalaska to Oeiras | 4,087.51 mi (6,578.22 km) |
| Onalaska to Olhao | 4,218.68 mi (6,789.31 km) |
| Onalaska to Oliveira de Azemeis | 4,042.76 mi (6,506.19 km) |
