| Sioux Falls to Collegno | 4,755.05 mi (7,652.52 km) |
| Sioux Falls to Cologno al Serio | 4,809.11 mi (7,739.51 km) |
| Sioux Falls to Cologno Monzese | 4,796.47 mi (7,719.18 km) |
| Sioux Falls to Colorno | 4,863.93 mi (7,827.73 km) |
| Sioux Falls to Comacchio | 4,939.30 mi (7,949.03 km) |
| Sioux Falls to Comiso | 5,407.71 mi (8,702.87 km) |
| Sioux Falls to Como | 4,776.58 mi (7,687.17 km) |
| Sioux Falls to Concordia Sagittaria | 4,911.79 mi (7,904.76 km) |
| Sioux Falls to Concorezzo | 4,795.73 mi (7,717.98 km) |
| Sioux Falls to Conegliano | 4,886.80 mi (7,864.54 km) |
| Sioux Falls to Conselice | 4,935.57 mi (7,943.03 km) |
| Sioux Falls to Conselve | 4,902.70 mi (7,890.13 km) |
| Sioux Falls to Conversano | 5,298.34 mi (8,526.86 km) |
| Sioux Falls to Copertino | 5,367.08 mi (8,637.48 km) |
| Sioux Falls to Copparo | 4,917.34 mi (7,913.69 km) |
