| Hilton Head Island to Castelfidardo | 4,927.04 mi (7,929.31 km) |
| Hilton Head Island to Castelfiorentino | 4,807.01 mi (7,736.14 km) |
| Hilton Head Island to Castelfranco di Sopra | 4,832.99 mi (7,777.94 km) |
| Hilton Head Island to Castelfranco di Sotto | 4,794.26 mi (7,715.62 km) |
| Hilton Head Island to Castelfranco Emilia | 4,781.40 mi (7,694.91 km) |
| Hilton Head Island to Castelfranco Veneto | 4,788.64 mi (7,706.57 km) |
| Hilton Head Island to Castellabate | 5,093.88 mi (8,197.80 km) |
| Hilton Head Island to Castellammare del Golfo | 5,070.34 mi (8,159.92 km) |
| Hilton Head Island to Castellammare di Stabia | 5,058.35 mi (8,140.62 km) |
| Hilton Head Island to Castellamonte | 4,610.23 mi (7,419.45 km) |
| Hilton Head Island to Castellana Grotte | 5,174.89 mi (8,328.18 km) |
| Hilton Head Island to Castellaneta | 5,172.84 mi (8,324.89 km) |
| Hilton Head Island to Castellanza | 4,656.69 mi (7,494.22 km) |
| Hilton Head Island to Castellarano | 4,770.27 mi (7,677.01 km) |
| Hilton Head Island to Castelleone | 4,703.82 mi (7,570.06 km) |
