| Skien to Montemor-o-Novo | 1,621.88 mi (2,610.16 km) |
| Skien to Montemor-o-Velho | 1,536.33 mi (2,472.49 km) |
| Skien to Montijo | 1,634.44 mi (2,630.37 km) |
| Skien to Mortagua | 1,509.63 mi (2,429.52 km) |
| Skien to Moura | 1,639.00 mi (2,637.71 km) |
| Skien to Murtosa | 1,499.82 mi (2,413.73 km) |
| Skien to Nazare | 1,580.41 mi (2,543.42 km) |
| Skien to Nelas | 1,495.98 mi (2,407.55 km) |
| Skien to Obidos | 1,597.62 mi (2,571.12 km) |
| Skien to Odemira | 1,698.59 mi (2,733.61 km) |
| Skien to Odivelas | 1,633.82 mi (2,629.38 km) |
| Skien to Oeiras | 1,643.59 mi (2,645.10 km) |
| Skien to Olhao | 1,718.02 mi (2,764.88 km) |
| Skien to Oliveira de Azemeis | 1,489.60 mi (2,397.28 km) |
| Skien to Oliveira de Frades | 1,490.77 mi (2,399.17 km) |
