| Gilbert to Montalegre | 5,356.44 mi (8,620.35 km) |
| Gilbert to Montemor-o-Novo | 5,460.43 mi (8,787.71 km) |
| Gilbert to Montemor-o-Velho | 5,381.32 mi (8,660.40 km) |
| Gilbert to Montijo | 5,428.57 mi (8,736.43 km) |
| Gilbert to Mortagua | 5,390.81 mi (8,675.67 km) |
| Gilbert to Moura | 5,514.86 mi (8,875.30 km) |
| Gilbert to Murtosa | 5,361.85 mi (8,629.06 km) |
| Gilbert to Nazare | 5,386.04 mi (8,667.99 km) |
| Gilbert to Nelas | 5,404.31 mi (8,697.40 km) |
| Gilbert to Obidos | 5,391.22 mi (8,676.32 km) |
| Gilbert to Odemira | 5,483.02 mi (8,824.06 km) |
| Gilbert to Odivelas | 5,411.92 mi (8,709.65 km) |
| Gilbert to Oeiras | 5,409.86 mi (8,706.33 km) |
| Gilbert to Olhao | 5,540.69 mi (8,916.88 km) |
| Gilbert to Oliveira de Azemeis | 5,364.67 mi (8,633.60 km) |
