| Rock Island to Castelfidardo | 4,917.24 mi (7,913.54 km) |
| Rock Island to Castelfiorentino | 4,811.12 mi (7,742.76 km) |
| Rock Island to Castelfranco di Sopra | 4,833.23 mi (7,778.34 km) |
| Rock Island to Castelfranco di Sotto | 4,798.34 mi (7,722.18 km) |
| Rock Island to Castelfranco Emilia | 4,771.76 mi (7,679.41 km) |
| Rock Island to Castelfranco Veneto | 4,759.65 mi (7,659.92 km) |
| Rock Island to Castellabate | 5,115.42 mi (8,232.47 km) |
| Rock Island to Castellammare del Golfo | 5,133.94 mi (8,262.28 km) |
| Rock Island to Castellammare di Stabia | 5,077.81 mi (8,171.95 km) |
| Rock Island to Castellamonte | 4,608.94 mi (7,417.36 km) |
| Rock Island to Castellana Grotte | 5,174.13 mi (8,326.95 km) |
| Rock Island to Castellaneta | 5,176.72 mi (8,331.12 km) |
| Rock Island to Castellanza | 4,645.58 mi (7,476.33 km) |
| Rock Island to Castellarano | 4,762.61 mi (7,664.69 km) |
| Rock Island to Castelleone | 4,692.24 mi (7,551.43 km) |
