| Rapid City to Cascais | 4,599.25 mi (7,401.79 km) |
| Rapid City to Castelo Branco | 4,630.75 mi (7,452.47 km) |
| Rapid City to Castro Daire | 4,566.08 mi (7,348.40 km) |
| Rapid City to Celorico de Basto | 4,542.62 mi (7,310.64 km) |
| Rapid City to Chamusca | 4,610.27 mi (7,419.52 km) |
| Rapid City to Chaves | 4,548.73 mi (7,320.48 km) |
| Rapid City to Cinfaes | 4,549.33 mi (7,321.43 km) |
| Rapid City to Coimbra | 4,575.35 mi (7,363.32 km) |
| Rapid City to Condeixa-a-Nova | 4,576.49 mi (7,365.15 km) |
| Rapid City to Corroios | 4,614.14 mi (7,425.74 km) |
| Rapid City to Coruche | 4,625.49 mi (7,444.01 km) |
| Rapid City to Costa de Caparica | 4,609.27 mi (7,417.91 km) |
| Rapid City to Covilha | 4,610.47 mi (7,419.83 km) |
| Rapid City to Eiras | 4,574.23 mi (7,361.52 km) |
| Rapid City to Elvas | 4,686.79 mi (7,542.66 km) |
