| Hilton Head Island to Cascais | 3,939.10 mi (6,339.37 km) |
| Hilton Head Island to Castelo Branco | 4,014.23 mi (6,460.28 km) |
| Hilton Head Island to Castro Daire | 3,970.64 mi (6,390.12 km) |
| Hilton Head Island to Celorico de Basto | 3,957.93 mi (6,369.68 km) |
| Hilton Head Island to Chamusca | 3,973.77 mi (6,395.17 km) |
| Hilton Head Island to Chaves | 3,977.31 mi (6,400.86 km) |
| Hilton Head Island to Cinfaes | 3,956.74 mi (6,367.76 km) |
| Hilton Head Island to Coimbra | 3,959.24 mi (6,371.78 km) |
| Hilton Head Island to Condeixa-a-Nova | 3,957.53 mi (6,369.03 km) |
| Hilton Head Island to Corroios | 3,954.55 mi (6,364.23 km) |
| Hilton Head Island to Coruche | 3,979.59 mi (6,404.54 km) |
| Hilton Head Island to Costa de Caparica | 3,949.56 mi (6,356.21 km) |
| Hilton Head Island to Covilha | 4,004.69 mi (6,444.93 km) |
| Hilton Head Island to Eiras | 3,958.89 mi (6,371.22 km) |
| Hilton Head Island to Elvas | 4,052.01 mi (6,521.07 km) |
