| Helena to Cermik | 6,321.98 mi (10,174.24 km) |
| Helena to Cesme | 6,028.74 mi (9,702.31 km) |
| Helena to Ceyhan | 6,324.60 mi (10,178.45 km) |
| Helena to Ceylanpinar | 6,416.99 mi (10,327.15 km) |
| Helena to Cicekdagi | 6,130.95 mi (9,866.81 km) |
| Helena to Cide | 5,956.91 mi (9,586.72 km) |
| Helena to Cifteler | 6,073.86 mi (9,774.94 km) |
| Helena to Ciftlik | 6,224.53 mi (10,017.42 km) |
| Helena to Ciftlikkoy | 5,955.57 mi (9,584.57 km) |
| Helena to Cihanbeyli | 6,160.65 mi (9,914.60 km) |
| Helena to Cildir | 6,185.85 mi (9,955.17 km) |
| Helena to Cilimli | 5,978.67 mi (9,621.74 km) |
| Helena to Cinar | 6,365.96 mi (10,245.03 km) |
| Helena to Cinarcik | 5,952.11 mi (9,578.99 km) |
| Helena to Cine | 6,115.71 mi (9,842.29 km) |
