| Lake Butler to Montalegre | 4,139.74 mi (6,662.27 km) |
| Lake Butler to Montemor-o-Novo | 4,169.34 mi (6,709.90 km) |
| Lake Butler to Montemor-o-Velho | 4,120.19 mi (6,630.80 km) |
| Lake Butler to Montijo | 4,133.03 mi (6,651.47 km) |
| Lake Butler to Mortagua | 4,139.04 mi (6,661.14 km) |
| Lake Butler to Moura | 4,218.54 mi (6,789.09 km) |
| Lake Butler to Murtosa | 4,113.89 mi (6,620.66 km) |
| Lake Butler to Nazare | 4,109.40 mi (6,613.44 km) |
| Lake Butler to Nelas | 4,157.30 mi (6,690.52 km) |
| Lake Butler to Obidos | 4,108.55 mi (6,612.07 km) |
| Lake Butler to Odemira | 4,165.88 mi (6,704.34 km) |
| Lake Butler to Odivelas | 4,116.62 mi (6,625.07 km) |
| Lake Butler to Oeiras | 4,111.21 mi (6,616.35 km) |
| Lake Butler to Olhao | 4,217.93 mi (6,788.11 km) |
| Lake Butler to Oliveira de Azemeis | 4,120.31 mi (6,630.99 km) |
