| Lake Norman of Catawba to Montalegre | 3,849.17 mi (6,194.64 km) |
| Lake Norman of Catawba to Montemor-o-Novo | 3,904.93 mi (6,284.38 km) |
| Lake Norman of Catawba to Montemor-o-Velho | 3,844.42 mi (6,186.99 km) |
| Lake Norman of Catawba to Montijo | 3,869.74 mi (6,227.74 km) |
| Lake Norman of Catawba to Mortagua | 3,860.29 mi (6,212.54 km) |
| Lake Norman of Catawba to Moura | 3,956.71 mi (6,367.71 km) |
| Lake Norman of Catawba to Murtosa | 3,833.46 mi (6,169.36 km) |
| Lake Norman of Catawba to Nazare | 3,838.95 mi (6,178.20 km) |
| Lake Norman of Catawba to Nelas | 3,877.18 mi (6,239.72 km) |
| Lake Norman of Catawba to Obidos | 3,840.24 mi (6,180.28 km) |
| Lake Norman of Catawba to Odemira | 3,911.04 mi (6,294.22 km) |
| Lake Norman of Catawba to Odivelas | 3,853.02 mi (6,200.83 km) |
| Lake Norman of Catawba to Oeiras | 3,848.75 mi (6,193.97 km) |
| Lake Norman of Catawba to Olhao | 3,965.91 mi (6,382.51 km) |
| Lake Norman of Catawba to Oliveira de Azemeis | 3,838.74 mi (6,177.86 km) |
