| On Top of the World Designated Place to Montalegre | 4,152.82 mi (6,683.32 km) |
| On Top of the World Designated Place to Montemor-o-Novo | 4,186.23 mi (6,737.09 km) |
| On Top of the World Designated Place to Montemor-o-Velho | 4,135.42 mi (6,655.31 km) |
| On Top of the World Designated Place to Montijo | 4,150.05 mi (6,678.86 km) |
| On Top of the World Designated Place to Mortagua | 4,153.86 mi (6,684.98 km) |
| On Top of the World Designated Place to Moura | 4,235.85 mi (6,816.93 km) |
| On Top of the World Designated Place to Murtosa | 4,128.44 mi (6,644.08 km) |
| On Top of the World Designated Place to Nazare | 4,125.39 mi (6,639.17 km) |
| On Top of the World Designated Place to Nelas | 4,171.93 mi (6,714.08 km) |
| On Top of the World Designated Place to Obidos | 4,124.84 mi (6,638.28 km) |
| On Top of the World Designated Place to Odemira | 4,184.11 mi (6,733.68 km) |
| On Top of the World Designated Place to Odivelas | 4,133.58 mi (6,652.36 km) |
| On Top of the World Designated Place to Oeiras | 4,128.33 mi (6,643.90 km) |
| On Top of the World Designated Place to Olhao | 4,236.59 mi (6,818.14 km) |
| On Top of the World Designated Place to Oliveira de Azemeis | 4,134.70 mi (6,654.16 km) |
