| Chicago Heights to Cascais | 3,989.68 mi (6,420.76 km) |
| Chicago Heights to Castelo Branco | 4,039.95 mi (6,501.67 km) |
| Chicago Heights to Castro Daire | 3,983.07 mi (6,410.14 km) |
| Chicago Heights to Celorico de Basto | 3,963.78 mi (6,379.09 km) |
| Chicago Heights to Chamusca | 4,010.71 mi (6,454.62 km) |
| Chicago Heights to Chaves | 3,975.71 mi (6,398.29 km) |
| Chicago Heights to Cinfaes | 3,967.23 mi (6,384.64 km) |
| Chicago Heights to Coimbra | 3,983.74 mi (6,411.21 km) |
| Chicago Heights to Condeixa-a-Nova | 3,983.69 mi (6,411.14 km) |
| Chicago Heights to Corroios | 4,005.05 mi (6,445.50 km) |
| Chicago Heights to Coruche | 4,022.27 mi (6,473.22 km) |
| Chicago Heights to Costa de Caparica | 4,000.05 mi (6,437.46 km) |
| Chicago Heights to Covilha | 4,023.86 mi (6,475.78 km) |
| Chicago Heights to Eiras | 3,982.92 mi (6,409.90 km) |
| Chicago Heights to Elvas | 4,089.28 mi (6,581.05 km) |
