| Iowa City to Castelletto sopra Ticino | 4,659.13 mi (7,498.15 km) |
| Iowa City to Castelli Calepio | 4,711.12 mi (7,581.81 km) |
| Iowa City to Castelnovo ne' Monti | 4,781.62 mi (7,695.27 km) |
| Iowa City to Castelnuovo Berardenga | 4,871.57 mi (7,840.04 km) |
| Iowa City to Castelnuovo di Porto | 4,964.12 mi (7,988.98 km) |
| Iowa City to Castelnuovo di Verona | 4,752.63 mi (7,648.62 km) |
| Iowa City to Castelnuovo Rangone | 4,797.09 mi (7,720.18 km) |
| Iowa City to Castelvetrano | 5,177.08 mi (8,331.71 km) |
| Iowa City to Castelvetro di Modena | 4,799.90 mi (7,724.69 km) |
| Iowa City to Castenaso | 4,819.42 mi (7,756.11 km) |
| Iowa City to Castenedolo | 4,733.17 mi (7,617.30 km) |
| Iowa City to Castiglion Fiorentino | 4,887.78 mi (7,866.12 km) |
| Iowa City to Castiglione del Lago | 4,901.84 mi (7,888.75 km) |
| Iowa City to Castiglione delle Stiviere | 4,743.92 mi (7,634.60 km) |
| Iowa City to Castrolibero | 5,238.13 mi (8,429.96 km) |
