| Skien to Marco de Canavezes | 1,460.89 mi (2,351.07 km) |
| Skien to Marinha Grande | 1,568.02 mi (2,523.49 km) |
| Skien to Massama | 1,638.03 mi (2,636.16 km) |
| Skien to Matosinhos | 1,473.37 mi (2,371.15 km) |
| Skien to Mealhada | 1,517.57 mi (2,442.29 km) |
| Skien to Melgaco | 1,405.66 mi (2,262.20 km) |
| Skien to Melres | 1,473.78 mi (2,371.82 km) |
| Skien to Mira | 1,520.79 mi (2,447.48 km) |
| Skien to Miranda do Corvo | 1,532.75 mi (2,466.73 km) |
| Skien to Mirandela | 1,420.62 mi (2,286.27 km) |
| Skien to Mogadouro | 1,420.20 mi (2,285.60 km) |
| Skien to Moimenta da Beira | 1,461.75 mi (2,352.45 km) |
| Skien to Moita | 1,638.36 mi (2,636.68 km) |
| Skien to Moncao | 1,413.28 mi (2,274.46 km) |
| Skien to Montalegre | 1,413.02 mi (2,274.03 km) |
