| Ponca City to Casamassima | 5,639.07 mi (9,075.21 km) |
| Ponca City to Casandrino | 5,535.57 mi (8,908.63 km) |
| Ponca City to Casapulla | 5,530.87 mi (8,901.08 km) |
| Ponca City to Casarano | 5,731.07 mi (9,223.27 km) |
| Ponca City to Casatenovo | 5,135.80 mi (8,265.28 km) |
| Ponca City to Casciana Terme | 5,278.26 mi (8,494.53 km) |
| Ponca City to Cascina | 5,268.91 mi (8,479.48 km) |
| Ponca City to Caselle Torinese | 5,092.39 mi (8,195.41 km) |
| Ponca City to Caserta | 5,532.84 mi (8,904.25 km) |
| Ponca City to Casier | 5,251.69 mi (8,451.78 km) |
| Ponca City to Casorate Primo | 5,140.24 mi (8,272.41 km) |
| Ponca City to Casoria | 5,539.05 mi (8,914.23 km) |
| Ponca City to Cassano al Ionio | 5,669.73 mi (9,124.55 km) |
| Ponca City to Cassano d'Adda | 5,150.58 mi (8,289.06 km) |
| Ponca City to Cassano delle Murge | 5,636.37 mi (9,070.85 km) |
