| Ponca City to Cermik | 6,567.92 mi (10,570.05 km) |
| Ponca City to Cesme | 6,119.77 mi (9,848.82 km) |
| Ponca City to Ceyhan | 6,516.87 mi (10,487.89 km) |
| Ponca City to Ceylanpinar | 6,660.41 mi (10,718.90 km) |
| Ponca City to Cicekdagi | 6,328.42 mi (10,184.61 km) |
| Ponca City to Cide | 6,158.34 mi (9,910.88 km) |
| Ponca City to Cifteler | 6,229.96 mi (10,026.15 km) |
| Ponca City to Ciftlik | 6,410.40 mi (10,316.54 km) |
| Ponca City to Ciftlikkoy | 6,104.10 mi (9,823.60 km) |
| Ponca City to Cihanbeyli | 6,332.28 mi (10,190.82 km) |
| Ponca City to Cildir | 6,497.87 mi (10,457.32 km) |
| Ponca City to Cilimli | 6,148.99 mi (9,895.84 km) |
| Ponca City to Cinar | 6,620.61 mi (10,654.85 km) |
| Ponca City to Cinarcik | 6,098.16 mi (9,814.05 km) |
| Ponca City to Cine | 6,220.08 mi (10,010.25 km) |
