| Delaware to Cascais | 3,808.74 mi (6,129.58 km) |
| Delaware to Castelo Branco | 3,865.34 mi (6,220.66 km) |
| Delaware to Castro Daire | 3,811.54 mi (6,134.08 km) |
| Delaware to Celorico de Basto | 3,793.83 mi (6,105.58 km) |
| Delaware to Chamusca | 3,833.19 mi (6,168.93 km) |
| Delaware to Chaves | 3,807.73 mi (6,127.95 km) |
| Delaware to Cinfaes | 3,796.11 mi (6,109.25 km) |
| Delaware to Coimbra | 3,809.17 mi (6,130.27 km) |
| Delaware to Condeixa-a-Nova | 3,808.71 mi (6,129.53 km) |
| Delaware to Corroios | 3,824.20 mi (6,154.46 km) |
| Delaware to Coruche | 3,843.40 mi (6,185.36 km) |
| Delaware to Costa de Caparica | 3,819.18 mi (6,146.38 km) |
| Delaware to Covilha | 3,850.82 mi (6,197.30 km) |
| Delaware to Eiras | 3,808.47 mi (6,129.14 km) |
| Delaware to Elvas | 3,912.03 mi (6,295.81 km) |
