| Sioux City to Celano | 5,152.14 mi (8,291.56 km) |
| Sioux City to Cento | 4,943.82 mi (7,956.31 km) |
| Sioux City to Cepagatti | 5,157.35 mi (8,299.95 km) |
| Sioux City to Ceprano | 5,176.40 mi (8,330.62 km) |
| Sioux City to Cercola | 5,240.38 mi (8,433.58 km) |
| Sioux City to Cerea | 4,919.77 mi (7,917.60 km) |
| Sioux City to Cerese | 4,909.78 mi (7,901.52 km) |
| Sioux City to Cerignola | 5,277.88 mi (8,493.92 km) |
| Sioux City to Cermenate | 4,819.37 mi (7,756.03 km) |
| Sioux City to Cernusco sul Naviglio | 4,836.79 mi (7,784.07 km) |
| Sioux City to Cerreto Guidi | 4,974.05 mi (8,004.95 km) |
| Sioux City to Cerro Maggiore | 4,819.00 mi (7,755.43 km) |
| Sioux City to Certaldo | 4,990.06 mi (8,030.73 km) |
| Sioux City to Cerveteri | 5,102.15 mi (8,211.11 km) |
| Sioux City to Cervia | 5,004.93 mi (8,054.66 km) |
