| Sioux Falls to Cortona | 5,000.41 mi (8,047.38 km) |
| Sioux Falls to Cosenza | 5,351.26 mi (8,612.02 km) |
| Sioux Falls to Cossato | 4,754.50 mi (7,651.64 km) |
| Sioux Falls to Costa Volpino | 4,811.90 mi (7,744.01 km) |
| Sioux Falls to Creazzo | 4,874.94 mi (7,845.46 km) |
| Sioux Falls to Crema | 4,818.55 mi (7,754.70 km) |
| Sioux Falls to Cremona | 4,841.99 mi (7,792.43 km) |
| Sioux Falls to Crevalcore | 4,901.64 mi (7,888.43 km) |
| Sioux Falls to Crispiano | 5,321.06 mi (8,563.41 km) |
| Sioux Falls to Crosia | 5,356.60 mi (8,620.62 km) |
| Sioux Falls to Crotone | 5,393.82 mi (8,680.51 km) |
| Sioux Falls to Cuneo | 4,785.83 mi (7,702.05 km) |
| Sioux Falls to Cuorgne | 4,743.71 mi (7,634.26 km) |
| Sioux Falls to Cusano Milanino | 4,792.06 mi (7,712.08 km) |
| Sioux Falls to Cutro | 5,391.50 mi (8,676.78 km) |
