| Lake Ronkonkoma to Montalegre | 3,304.29 mi (5,317.73 km) |
| Lake Ronkonkoma to Montemor-o-Novo | 3,369.83 mi (5,423.22 km) |
| Lake Ronkonkoma to Montemor-o-Velho | 3,304.97 mi (5,318.84 km) |
| Lake Ronkonkoma to Montijo | 3,335.27 mi (5,367.60 km) |
| Lake Ronkonkoma to Mortagua | 3,319.64 mi (5,342.44 km) |
| Lake Ronkonkoma to Moura | 3,422.46 mi (5,507.93 km) |
| Lake Ronkonkoma to Murtosa | 3,292.28 mi (5,298.41 km) |
| Lake Ronkonkoma to Nazare | 3,301.64 mi (5,313.48 km) |
| Lake Ronkonkoma to Nelas | 3,335.94 mi (5,368.68 km) |
| Lake Ronkonkoma to Obidos | 3,303.81 mi (5,316.97 km) |
| Lake Ronkonkoma to Odemira | 3,380.06 mi (5,439.68 km) |
| Lake Ronkonkoma to Odivelas | 3,318.49 mi (5,340.59 km) |
| Lake Ronkonkoma to Oeiras | 3,314.74 mi (5,334.56 km) |
| Lake Ronkonkoma to Olhao | 3,435.91 mi (5,529.57 km) |
| Lake Ronkonkoma to Oliveira de Azemeis | 3,297.11 mi (5,306.19 km) |
