| Sioux City to Carmignano | 4,976.65 mi (8,009.14 km) |
| Sioux City to Carovigno | 5,370.10 mi (8,642.34 km) |
| Sioux City to Carpenedolo | 4,883.73 mi (7,859.61 km) |
| Sioux City to Carpi | 4,926.94 mi (7,929.15 km) |
| Sioux City to Carrara | 4,930.63 mi (7,935.08 km) |
| Sioux City to Carugate | 4,835.29 mi (7,781.64 km) |
| Sioux City to Casal di Principe | 5,225.05 mi (8,408.91 km) |
| Sioux City to Casale Monferrato | 4,821.86 mi (7,760.03 km) |
| Sioux City to Casale sul Sile | 4,941.21 mi (7,952.11 km) |
| Sioux City to Casalecchio di Reno | 4,955.43 mi (7,975.00 km) |
| Sioux City to Casalgrande | 4,930.70 mi (7,935.20 km) |
| Sioux City to Casalmaggiore | 4,900.52 mi (7,886.62 km) |
| Sioux City to Casalnuovo di Napoli | 5,237.95 mi (8,429.67 km) |
| Sioux City to Casalpusterlengo | 4,863.77 mi (7,827.49 km) |
| Sioux City to Casaluce | 5,228.34 mi (8,414.20 km) |
