| Iowa City to Cividale del Friuli | 4,823.34 mi (7,762.42 km) |
| Iowa City to Civita Castellana | 4,953.34 mi (7,971.63 km) |
| Iowa City to Civitanova Marche | 4,959.45 mi (7,981.46 km) |
| Iowa City to Civitavecchia | 4,938.16 mi (7,947.21 km) |
| Iowa City to Civitella in Val di Chiana | 4,876.75 mi (7,848.37 km) |
| Iowa City to Clusone | 4,702.41 mi (7,567.80 km) |
| Iowa City to Coccaglio | 4,717.08 mi (7,591.40 km) |
| Iowa City to Codigoro | 4,829.87 mi (7,772.93 km) |
| Iowa City to Codogno | 4,723.77 mi (7,602.17 km) |
| Iowa City to Codroipo | 4,812.62 mi (7,745.17 km) |
| Iowa City to Cogoleto | 4,715.37 mi (7,588.66 km) |
| Iowa City to Colle di Val d'Elsa | 4,854.85 mi (7,813.13 km) |
| Iowa City to Colle Salvetti | 4,820.85 mi (7,758.41 km) |
| Iowa City to Collecchio | 4,760.94 mi (7,662.00 km) |
| Iowa City to Colleferro | 5,002.26 mi (8,050.36 km) |
