| Rock Island to Castelletto sopra Ticino | 4,631.12 mi (7,453.07 km) |
| Rock Island to Castelli Calepio | 4,683.48 mi (7,537.33 km) |
| Rock Island to Castelnovo ne' Monti | 4,753.40 mi (7,649.86 km) |
| Rock Island to Castelnuovo Berardenga | 4,843.08 mi (7,794.19 km) |
| Rock Island to Castelnuovo di Porto | 4,935.27 mi (7,942.55 km) |
| Rock Island to Castelnuovo di Verona | 4,725.16 mi (7,604.42 km) |
| Rock Island to Castelnuovo Rangone | 4,769.14 mi (7,675.18 km) |
| Rock Island to Castelvetrano | 5,145.83 mi (8,281.41 km) |
| Rock Island to Castelvetro di Modena | 4,771.92 mi (7,679.66 km) |
| Rock Island to Castenaso | 4,791.63 mi (7,711.38 km) |
| Rock Island to Castenedolo | 4,705.56 mi (7,572.87 km) |
| Rock Island to Castiglion Fiorentino | 4,859.44 mi (7,820.51 km) |
| Rock Island to Castiglione del Lago | 4,873.42 mi (7,843.01 km) |
| Rock Island to Castiglione delle Stiviere | 4,716.34 mi (7,590.22 km) |
| Rock Island to Castrolibero | 5,209.08 mi (8,383.20 km) |
