| Chicago to Cascais | 3,982.43 mi (6,409.11 km) |
| Chicago to Castelo Branco | 4,031.95 mi (6,488.80 km) |
| Chicago to Castro Daire | 3,974.74 mi (6,396.72 km) |
| Chicago to Celorico de Basto | 3,955.27 mi (6,365.39 km) |
| Chicago to Chamusca | 4,003.06 mi (6,442.30 km) |
| Chicago to Chaves | 3,966.98 mi (6,384.24 km) |
| Chicago to Cinfaes | 3,958.85 mi (6,371.15 km) |
| Chicago to Coimbra | 3,975.75 mi (6,398.35 km) |
| Chicago to Condeixa-a-Nova | 3,975.75 mi (6,398.35 km) |
| Chicago to Corroios | 3,997.79 mi (6,433.82 km) |
| Chicago to Coruche | 4,014.78 mi (6,461.16 km) |
| Chicago to Costa de Caparica | 3,992.80 mi (6,425.79 km) |
| Chicago to Covilha | 4,015.69 mi (6,462.63 km) |
| Chicago to Eiras | 3,974.92 mi (6,397.01 km) |
| Chicago to Elvas | 4,081.57 mi (6,568.66 km) |
