| Security-Widefield to Cascais | 4,865.44 mi (7,830.17 km) |
| Security-Widefield to Castelo Branco | 4,905.64 mi (7,894.87 km) |
| Security-Widefield to Castro Daire | 4,844.17 mi (7,795.94 km) |
| Security-Widefield to Celorico de Basto | 4,822.41 mi (7,760.93 km) |
| Security-Widefield to Chamusca | 4,881.16 mi (7,855.47 km) |
| Security-Widefield to Chaves | 4,830.98 mi (7,774.71 km) |
| Security-Widefield to Cinfaes | 4,827.75 mi (7,769.52 km) |
| Security-Widefield to Coimbra | 4,849.71 mi (7,804.86 km) |
| Security-Widefield to Condeixa-a-Nova | 4,850.33 mi (7,805.85 km) |
| Security-Widefield to Corroios | 4,880.60 mi (7,854.56 km) |
| Security-Widefield to Coruche | 4,894.74 mi (7,877.32 km) |
| Security-Widefield to Costa de Caparica | 4,875.66 mi (7,846.61 km) |
| Security-Widefield to Covilha | 4,887.14 mi (7,865.10 km) |
| Security-Widefield to Eiras | 4,848.73 mi (7,803.27 km) |
| Security-Widefield to Elvas | 4,958.84 mi (7,980.48 km) |
