| Hartsville to Mangualde | 4,103.98 mi (6,604.71 km) |
| Hartsville to Marco de Canavezes | 4,069.45 mi (6,549.15 km) |
| Hartsville to Marinha Grande | 4,070.89 mi (6,551.47 km) |
| Hartsville to Massama | 4,081.82 mi (6,569.05 km) |
| Hartsville to Matosinhos | 4,043.13 mi (6,506.78 km) |
| Hartsville to Mealhada | 4,076.88 mi (6,561.11 km) |
| Hartsville to Melgaco | 4,038.86 mi (6,499.92 km) |
| Hartsville to Melres | 4,060.65 mi (6,534.98 km) |
| Hartsville to Mira | 4,061.83 mi (6,536.88 km) |
| Hartsville to Miranda do Corvo | 4,090.34 mi (6,582.77 km) |
| Hartsville to Mirandela | 4,107.35 mi (6,610.14 km) |
| Hartsville to Mogadouro | 4,133.63 mi (6,652.44 km) |
| Hartsville to Moimenta da Beira | 4,100.67 mi (6,599.40 km) |
| Hartsville to Moita | 4,099.18 mi (6,596.99 km) |
| Hartsville to Moncao | 4,029.91 mi (6,485.51 km) |
