| Ponca City to Castelfidardo | 5,394.92 mi (8,682.29 km) |
| Ponca City to Castelfiorentino | 5,288.83 mi (8,511.55 km) |
| Ponca City to Castelfranco di Sopra | 5,310.95 mi (8,547.15 km) |
| Ponca City to Castelfranco di Sotto | 5,276.04 mi (8,490.97 km) |
| Ponca City to Castelfranco Emilia | 5,249.47 mi (8,448.20 km) |
| Ponca City to Castelfranco Veneto | 5,237.15 mi (8,428.38 km) |
| Ponca City to Castellabate | 5,593.05 mi (9,001.14 km) |
| Ponca City to Castellammare del Golfo | 5,610.55 mi (9,029.31 km) |
| Ponca City to Castellammare di Stabia | 5,555.46 mi (8,940.64 km) |
| Ponca City to Castellamonte | 5,086.64 mi (8,186.16 km) |
| Ponca City to Castellana Grotte | 5,651.82 mi (9,095.73 km) |
| Ponca City to Castellaneta | 5,654.43 mi (9,099.93 km) |
| Ponca City to Castellanza | 5,123.29 mi (8,245.13 km) |
| Ponca City to Castellarano | 5,240.32 mi (8,433.48 km) |
| Ponca City to Castelleone | 5,169.94 mi (8,320.22 km) |
