| Piqua to Cascais | 3,868.80 mi (6,226.23 km) |
| Piqua to Castelo Branco | 3,924.76 mi (6,316.29 km) |
| Piqua to Castro Daire | 3,870.62 mi (6,229.16 km) |
| Piqua to Celorico de Basto | 3,852.73 mi (6,200.38 km) |
| Piqua to Chamusca | 3,892.91 mi (6,265.03 km) |
| Piqua to Chaves | 3,866.41 mi (6,222.39 km) |
| Piqua to Cinfaes | 3,855.15 mi (6,204.26 km) |
| Piqua to Coimbra | 3,868.58 mi (6,225.88 km) |
| Piqua to Condeixa-a-Nova | 3,868.16 mi (6,225.21 km) |
| Piqua to Corroios | 3,884.25 mi (6,251.10 km) |
| Piqua to Coruche | 3,903.26 mi (6,281.69 km) |
| Piqua to Costa de Caparica | 3,879.24 mi (6,243.03 km) |
| Piqua to Covilha | 3,910.07 mi (6,292.65 km) |
| Piqua to Eiras | 3,867.87 mi (6,224.73 km) |
| Piqua to Elvas | 3,971.73 mi (6,391.89 km) |
