| Healdsburg to Cermik | 7,015.53 mi (11,290.40 km) |
| Healdsburg to Cesme | 6,771.43 mi (10,897.57 km) |
| Healdsburg to Ceyhan | 7,036.26 mi (11,323.76 km) |
| Healdsburg to Ceylanpinar | 7,109.98 mi (11,442.40 km) |
| Healdsburg to Cicekdagi | 6,843.56 mi (11,013.64 km) |
| Healdsburg to Cide | 6,670.58 mi (10,735.26 km) |
| Healdsburg to Cifteler | 6,799.49 mi (10,942.72 km) |
| Healdsburg to Ciftlik | 6,939.53 mi (11,168.09 km) |
| Healdsburg to Ciftlikkoy | 6,684.64 mi (10,757.89 km) |
| Healdsburg to Cihanbeyli | 6,880.75 mi (11,073.50 km) |
| Healdsburg to Cildir | 6,856.28 mi (11,034.11 km) |
| Healdsburg to Cilimli | 6,701.38 mi (10,784.83 km) |
| Healdsburg to Cinar | 7,055.66 mi (11,354.98 km) |
| Healdsburg to Cinarcik | 6,681.88 mi (10,753.45 km) |
| Healdsburg to Cine | 6,854.42 mi (11,031.12 km) |
