| Hilton Head Island to Cividale del Friuli | 4,840.63 mi (7,790.23 km) |
| Hilton Head Island to Civita Castellana | 4,912.20 mi (7,905.43 km) |
| Hilton Head Island to Civitanova Marche | 4,940.58 mi (7,951.09 km) |
| Hilton Head Island to Civitavecchia | 4,890.34 mi (7,870.25 km) |
| Hilton Head Island to Civitella in Val di Chiana | 4,846.37 mi (7,799.48 km) |
| Hilton Head Island to Clusone | 4,695.56 mi (7,556.78 km) |
| Hilton Head Island to Coccaglio | 4,705.86 mi (7,573.34 km) |
| Hilton Head Island to Codigoro | 4,821.52 mi (7,759.49 km) |
| Hilton Head Island to Codogno | 4,705.18 mi (7,572.26 km) |
| Hilton Head Island to Codroipo | 4,825.21 mi (7,765.43 km) |
| Hilton Head Island to Cogoleto | 4,679.43 mi (7,530.82 km) |
| Hilton Head Island to Colle di Val d'Elsa | 4,820.51 mi (7,757.86 km) |
| Hilton Head Island to Colle Salvetti | 4,785.16 mi (7,700.96 km) |
| Hilton Head Island to Collecchio | 4,739.68 mi (7,627.77 km) |
| Hilton Head Island to Colleferro | 4,957.60 mi (7,978.48 km) |
