| Ponca City to Castelletto sopra Ticino | 5,108.83 mi (8,221.87 km) |
| Ponca City to Castelli Calepio | 5,161.15 mi (8,306.07 km) |
| Ponca City to Castelnovo ne' Monti | 5,231.12 mi (8,418.67 km) |
| Ponca City to Castelnuovo Berardenga | 5,320.79 mi (8,562.98 km) |
| Ponca City to Castelnuovo di Porto | 5,412.93 mi (8,711.27 km) |
| Ponca City to Castelnuovo di Verona | 5,202.81 mi (8,373.11 km) |
| Ponca City to Castelnuovo Rangone | 5,246.84 mi (8,443.98 km) |
| Ponca City to Castelvetrano | 5,622.25 mi (9,048.14 km) |
| Ponca City to Castelvetro di Modena | 5,249.63 mi (8,448.46 km) |
| Ponca City to Castenaso | 5,269.32 mi (8,480.15 km) |
| Ponca City to Castenedolo | 5,183.23 mi (8,341.60 km) |
| Ponca City to Castiglion Fiorentino | 5,337.15 mi (8,589.32 km) |
| Ponca City to Castiglione del Lago | 5,351.13 mi (8,611.81 km) |
| Ponca City to Castiglione delle Stiviere | 5,194.00 mi (8,358.94 km) |
| Ponca City to Castrolibero | 5,686.69 mi (9,151.85 km) |
