| Ponca City to Caltagirone | 5,713.76 mi (9,195.40 km) |
| Ponca City to Caltanissetta | 5,683.66 mi (9,146.96 km) |
| Ponca City to Calvisano | 5,190.25 mi (8,352.89 km) |
| Ponca City to Calvizzano | 5,534.43 mi (8,906.80 km) |
| Ponca City to Camaiore | 5,248.44 mi (8,446.55 km) |
| Ponca City to Cameri | 5,118.41 mi (8,237.28 km) |
| Ponca City to Camisano Vicentino | 5,235.41 mi (8,425.58 km) |
| Ponca City to Campagna | 5,581.21 mi (8,982.09 km) |
| Ponca City to Campagnano di Roma | 5,408.32 mi (8,703.84 km) |
| Ponca City to Campi Bisenzio | 5,286.04 mi (8,507.06 km) |
| Ponca City to Campi Salentina | 5,707.22 mi (9,184.89 km) |
| Ponca City to Campiglia Marittima | 5,297.90 mi (8,526.14 km) |
| Ponca City to Campobasso | 5,523.36 mi (8,888.99 km) |
| Ponca City to Campobello di Licata | 5,688.50 mi (9,154.76 km) |
| Ponca City to Campobello di Mazara | 5,622.69 mi (9,048.84 km) |
