| Red Oak to Montalegre | 4,720.04 mi (7,596.17 km) |
| Red Oak to Montemor-o-Novo | 4,793.53 mi (7,714.45 km) |
| Red Oak to Montemor-o-Velho | 4,726.12 mi (7,605.95 km) |
| Red Oak to Montijo | 4,759.29 mi (7,659.34 km) |
| Red Oak to Mortagua | 4,739.79 mi (7,627.96 km) |
| Red Oak to Moura | 4,846.51 mi (7,799.70 km) |
| Red Oak to Murtosa | 4,712.02 mi (7,583.26 km) |
| Red Oak to Nazare | 4,724.24 mi (7,602.92 km) |
| Red Oak to Nelas | 4,755.56 mi (7,653.34 km) |
| Red Oak to Obidos | 4,726.90 mi (7,607.22 km) |
| Red Oak to Odemira | 4,805.27 mi (7,733.33 km) |
| Red Oak to Odivelas | 4,742.50 mi (7,632.32 km) |
| Red Oak to Oeiras | 4,738.97 mi (7,626.64 km) |
| Red Oak to Olhao | 4,861.34 mi (7,823.57 km) |
| Red Oak to Oliveira de Azemeis | 4,716.43 mi (7,590.37 km) |
