| Piqua to Montalegre | 3,849.08 mi (6,194.50 km) |
| Piqua to Montemor-o-Novo | 3,927.86 mi (6,321.28 km) |
| Piqua to Montemor-o-Velho | 3,857.96 mi (6,208.79 km) |
| Piqua to Montijo | 3,894.10 mi (6,266.95 km) |
| Piqua to Mortagua | 3,870.93 mi (6,229.67 km) |
| Piqua to Moura | 3,981.27 mi (6,407.23 km) |
| Piqua to Murtosa | 3,842.92 mi (6,184.58 km) |
| Piqua to Nazare | 3,857.35 mi (6,207.80 km) |
| Piqua to Nelas | 3,886.36 mi (6,254.49 km) |
| Piqua to Obidos | 3,860.54 mi (6,212.94 km) |
| Piqua to Odemira | 3,942.28 mi (6,344.49 km) |
| Piqua to Odivelas | 3,877.31 mi (6,239.93 km) |
| Piqua to Oeiras | 3,874.12 mi (6,234.80 km) |
| Piqua to Olhao | 3,998.90 mi (6,435.60 km) |
| Piqua to Oliveira de Azemeis | 3,847.09 mi (6,191.29 km) |
