| Sioux City to Caltagirone | 5,423.91 mi (8,728.93 km) |
| Sioux City to Caltanissetta | 5,394.10 mi (8,680.97 km) |
| Sioux City to Calvisano | 4,881.35 mi (7,855.77 km) |
| Sioux City to Calvizzano | 5,232.57 mi (8,421.00 km) |
| Sioux City to Camaiore | 4,944.76 mi (7,957.82 km) |
| Sioux City to Cameri | 4,812.49 mi (7,744.95 km) |
| Sioux City to Camisano Vicentino | 4,923.07 mi (7,922.92 km) |
| Sioux City to Campagna | 5,277.94 mi (8,494.02 km) |
| Sioux City to Campagnano di Roma | 5,106.39 mi (8,217.95 km) |
| Sioux City to Campi Bisenzio | 4,980.94 mi (8,016.05 km) |
| Sioux City to Campi Salentina | 5,397.78 mi (8,686.89 km) |
| Sioux City to Campiglia Marittima | 4,996.66 mi (8,041.35 km) |
| Sioux City to Campobasso | 5,218.07 mi (8,397.67 km) |
| Sioux City to Campobello di Licata | 5,400.20 mi (8,690.78 km) |
| Sioux City to Campobello di Mazara | 5,336.09 mi (8,587.61 km) |
