| Ponca City to Cadiz | 4,814.21 mi (7,747.72 km) |
| Ponca City to Calafell | 4,998.48 mi (8,044.28 km) |
| Ponca City to Calahorra | 4,804.04 mi (7,731.36 km) |
| Ponca City to Calasparra | 4,965.91 mi (7,991.87 km) |
| Ponca City to Calatayud | 4,853.21 mi (7,810.49 km) |
| Ponca City to Caldas de Montbuy | 5,007.59 mi (8,058.94 km) |
| Ponca City to Caldas de Reyes | 4,498.42 mi (7,239.51 km) |
| Ponca City to Calella | 5,029.46 mi (8,094.13 km) |
| Ponca City to Callosa de Segura | 5,007.32 mi (8,058.50 km) |
| Ponca City to Calpe | 5,029.15 mi (8,093.63 km) |
| Ponca City to Calvia | 5,102.71 mi (8,212.02 km) |
| Ponca City to Camas | 4,795.66 mi (7,717.87 km) |
| Ponca City to Cambados | 4,494.48 mi (7,233.17 km) |
| Ponca City to Cambre | 4,490.08 mi (7,226.09 km) |
| Ponca City to Cambrils | 4,981.36 mi (8,016.72 km) |
