| Port Charlotte to Mangualde | 4,246.11 mi (6,833.45 km) |
| Port Charlotte to Marco de Canavezes | 4,217.86 mi (6,787.99 km) |
| Port Charlotte to Marinha Grande | 4,198.18 mi (6,756.33 km) |
| Port Charlotte to Massama | 4,195.02 mi (6,751.24 km) |
| Port Charlotte to Matosinhos | 4,189.85 mi (6,742.91 km) |
| Port Charlotte to Mealhada | 4,213.97 mi (6,781.72 km) |
| Port Charlotte to Melgaco | 4,199.04 mi (6,757.71 km) |
| Port Charlotte to Melres | 4,206.77 mi (6,770.14 km) |
| Port Charlotte to Mira | 4,198.67 mi (6,757.11 km) |
| Port Charlotte to Miranda do Corvo | 4,224.12 mi (6,798.07 km) |
| Port Charlotte to Mirandela | 4,262.64 mi (6,860.05 km) |
| Port Charlotte to Mogadouro | 4,288.43 mi (6,901.56 km) |
| Port Charlotte to Moimenta da Beira | 4,248.11 mi (6,836.68 km) |
| Port Charlotte to Moita | 4,211.98 mi (6,778.52 km) |
| Port Charlotte to Moncao | 4,188.90 mi (6,741.38 km) |
