| Ponca City to Castrovillari | 5,663.58 mi (9,114.66 km) |
| Ponca City to Catania | 5,725.55 mi (9,214.38 km) |
| Ponca City to Catanzaro | 5,721.91 mi (9,208.53 km) |
| Ponca City to Cattolica | 5,341.52 mi (8,596.34 km) |
| Ponca City to Cava de' Tirreni | 5,563.91 mi (8,954.25 km) |
| Ponca City to Cavallino | 5,718.21 mi (9,202.56 km) |
| Ponca City to Cavarzere | 5,265.64 mi (8,474.23 km) |
| Ponca City to Cave | 5,444.03 mi (8,761.31 km) |
| Ponca City to Cavriago | 5,224.97 mi (8,408.77 km) |
| Ponca City to Cavriglia | 5,312.64 mi (8,549.87 km) |
| Ponca City to Cazzago San Martino | 5,168.15 mi (8,317.33 km) |
| Ponca City to Ceccano | 5,470.94 mi (8,804.63 km) |
| Ponca City to Cecina | 5,283.25 mi (8,502.57 km) |
| Ponca City to Cefalu | 5,657.17 mi (9,104.33 km) |
| Ponca City to Ceglie Messapico | 5,675.57 mi (9,133.95 km) |
