| Sumter to Montalegre | 3,878.88 mi (6,242.46 km) |
| Sumter to Montemor-o-Novo | 3,927.06 mi (6,319.99 km) |
| Sumter to Montemor-o-Velho | 3,869.75 mi (6,227.77 km) |
| Sumter to Montijo | 3,891.49 mi (6,262.74 km) |
| Sumter to Mortagua | 3,886.52 mi (6,254.76 km) |
| Sumter to Moura | 3,978.18 mi (6,402.26 km) |
| Sumter to Murtosa | 3,860.15 mi (6,212.31 km) |
| Sumter to Nazare | 3,862.73 mi (6,216.46 km) |
| Sumter to Nelas | 3,903.84 mi (6,282.63 km) |
| Sumter to Obidos | 3,863.40 mi (6,217.54 km) |
| Sumter to Odemira | 3,930.43 mi (6,325.42 km) |
| Sumter to Odivelas | 3,874.83 mi (6,235.94 km) |
| Sumter to Oeiras | 3,870.23 mi (6,228.53 km) |
| Sumter to Olhao | 3,984.58 mi (6,412.56 km) |
| Sumter to Oliveira de Azemeis | 3,865.77 mi (6,221.36 km) |
