| Ponca City to Carmona | 4,812.11 mi (7,744.34 km) |
| Ponca City to Cartagena | 5,022.51 mi (8,082.95 km) |
| Ponca City to Cartama | 4,886.53 mi (7,864.11 km) |
| Ponca City to Cartaya | 4,747.22 mi (7,639.92 km) |
| Ponca City to Caspe | 4,927.63 mi (7,930.25 km) |
| Ponca City to Cassa de la Selva | 5,027.82 mi (8,091.50 km) |
| Ponca City to Castalla | 4,998.79 mi (8,044.77 km) |
| Ponca City to Castellbisbal | 5,005.66 mi (8,055.83 km) |
| Ponca City to Castelldefels | 5,013.00 mi (8,067.65 km) |
| Ponca City to Castello de Ampurias | 5,021.97 mi (8,082.08 km) |
| Ponca City to Castellon de la Plana | 4,974.76 mi (8,006.10 km) |
| Ponca City to Castilleja de la Cuesta | 4,795.54 mi (7,717.67 km) |
| Ponca City to Catarroja | 4,980.21 mi (8,014.88 km) |
| Ponca City to Catral | 5,009.31 mi (8,061.70 km) |
| Ponca City to Caudete | 4,980.38 mi (8,015.15 km) |
