| Piqua to Arcos de Valdevez | 3,819.30 mi (6,146.56 km) |
| Piqua to Arcozelo | 3,832.83 mi (6,168.34 km) |
| Piqua to Arganil | 3,886.05 mi (6,254.00 km) |
| Piqua to Arouca | 3,855.00 mi (6,204.03 km) |
| Piqua to Arruda dos Vinhos | 3,876.64 mi (6,238.85 km) |
| Piqua to Aveiro | 3,845.19 mi (6,188.23 km) |
| Piqua to Aver-o-Mar | 3,816.26 mi (6,141.68 km) |
| Piqua to Aves | 3,837.05 mi (6,175.13 km) |
| Piqua to Azambuja | 3,883.57 mi (6,250.00 km) |
| Piqua to Baiao | 3,857.78 mi (6,208.49 km) |
| Piqua to Barcelos | 3,819.98 mi (6,147.66 km) |
| Piqua to Barreiro | 3,886.64 mi (6,254.94 km) |
| Piqua to Batalha | 3,868.46 mi (6,225.69 km) |
| Piqua to Beja | 3,963.75 mi (6,379.04 km) |
| Piqua to Belas | 3,873.38 mi (6,233.60 km) |
