| Ponca City to Cervignano del Friuli | 5,282.88 mi (8,501.98 km) |
| Ponca City to Cesa | 5,533.40 mi (8,905.15 km) |
| Ponca City to Cesano Maderno | 5,132.20 mi (8,259.48 km) |
| Ponca City to Cesena | 5,315.18 mi (8,553.96 km) |
| Ponca City to Cesenatico | 5,318.29 mi (8,558.96 km) |
| Ponca City to Cetraro | 5,668.30 mi (9,122.25 km) |
| Ponca City to Cherasco | 5,122.64 mi (8,244.08 km) |
| Ponca City to Chiampo | 5,217.53 mi (8,396.81 km) |
| Ponca City to Chiaravalle | 5,380.73 mi (8,659.44 km) |
| Ponca City to Chiari | 5,165.27 mi (8,312.70 km) |
| Ponca City to Chiavari | 5,194.30 mi (8,359.42 km) |
| Ponca City to Chieri | 5,105.99 mi (8,217.30 km) |
| Ponca City to Chieti | 5,468.60 mi (8,800.87 km) |
| Ponca City to Chioggia | 5,269.55 mi (8,480.52 km) |
| Ponca City to Chiusi | 5,352.61 mi (8,614.19 km) |
