| Ponca City to Caldicot | 4,454.12 mi (7,168.22 km) |
| Ponca City to Calne | 4,487.35 mi (7,221.69 km) |
| Ponca City to Cam | 4,465.19 mi (7,186.03 km) |
| Ponca City to Camberley | 4,538.56 mi (7,304.10 km) |
| Ponca City to Camborne | 4,398.63 mi (7,078.91 km) |
| Ponca City to Cambridge | 4,541.41 mi (7,308.70 km) |
| Ponca City to Cambuslang | 4,272.98 mi (6,876.69 km) |
| Ponca City to Canford Cliffs | 4,514.44 mi (7,265.29 km) |
| Ponca City to Cannock | 4,445.97 mi (7,155.10 km) |
| Ponca City to Canterbury | 4,608.83 mi (7,417.20 km) |
| Ponca City to Carlisle | 4,343.89 mi (6,990.82 km) |
| Ponca City to Carlton Colville | 4,590.52 mi (7,387.73 km) |
| Ponca City to Carluke | 4,287.19 mi (6,899.57 km) |
| Ponca City to Carnoustie | 4,303.73 mi (6,926.18 km) |
| Ponca City to Carshalton | 4,559.17 mi (7,337.28 km) |
