| Aiken to Cascais | 3,945.81 mi (6,350.17 km) |
| Aiken to Castelo Branco | 4,017.53 mi (6,465.59 km) |
| Aiken to Castro Daire | 3,971.85 mi (6,392.08 km) |
| Aiken to Celorico de Basto | 3,958.14 mi (6,370.02 km) |
| Aiken to Chamusca | 3,978.59 mi (6,402.93 km) |
| Aiken to Chaves | 3,976.49 mi (6,399.54 km) |
| Aiken to Cinfaes | 3,957.63 mi (6,369.18 km) |
| Aiken to Coimbra | 3,962.19 mi (6,376.53 km) |
| Aiken to Condeixa-a-Nova | 3,960.72 mi (6,374.16 km) |
| Aiken to Corroios | 3,961.30 mi (6,375.09 km) |
| Aiken to Coruche | 3,985.27 mi (6,413.68 km) |
| Aiken to Costa de Caparica | 3,956.30 mi (6,367.05 km) |
| Aiken to Covilha | 4,007.00 mi (6,448.65 km) |
| Aiken to Eiras | 3,961.77 mi (6,375.85 km) |
| Aiken to Elvas | 4,057.11 mi (6,529.29 km) |
