| Sioux City to Butzbach | 4,594.38 mi (7,393.94 km) |
| Sioux City to Buxtehude | 4,497.05 mi (7,237.30 km) |
| Sioux City to Cadolzburg | 4,713.31 mi (7,585.33 km) |
| Sioux City to Calbe | 4,633.27 mi (7,456.52 km) |
| Sioux City to Calw | 4,672.22 mi (7,519.22 km) |
| Sioux City to Castrop-Rauxel | 4,500.72 mi (7,243.21 km) |
| Sioux City to Celle | 4,546.32 mi (7,316.59 km) |
| Sioux City to Cham | 4,784.30 mi (7,699.59 km) |
| Sioux City to Chemnitz | 4,718.90 mi (7,594.34 km) |
| Sioux City to Clausthal-Zellerfeld | 4,590.58 mi (7,387.83 km) |
| Sioux City to Cloppenburg | 4,470.13 mi (7,193.98 km) |
| Sioux City to Coburg | 4,679.97 mi (7,531.69 km) |
| Sioux City to Coesfeld | 4,478.73 mi (7,207.82 km) |
| Sioux City to Cologne | 4,514.32 mi (7,265.09 km) |
| Sioux City to Coswig | 4,726.79 mi (7,607.03 km) |
