| Rock Island to Cortona | 4,865.11 mi (7,829.64 km) |
| Rock Island to Cosenza | 5,211.83 mi (8,387.63 km) |
| Rock Island to Cossato | 4,619.15 mi (7,433.80 km) |
| Rock Island to Costa Volpino | 4,682.87 mi (7,536.34 km) |
| Rock Island to Creazzo | 4,748.28 mi (7,641.61 km) |
| Rock Island to Crema | 4,686.28 mi (7,541.83 km) |
| Rock Island to Cremona | 4,709.59 mi (7,579.36 km) |
| Rock Island to Crevalcore | 4,770.39 mi (7,677.20 km) |
| Rock Island to Crispiano | 5,189.90 mi (8,352.33 km) |
| Rock Island to Crosia | 5,219.83 mi (8,400.51 km) |
| Rock Island to Crotone | 5,256.19 mi (8,459.03 km) |
| Rock Island to Cuneo | 4,643.39 mi (7,472.81 km) |
| Rock Island to Cuorgne | 4,606.18 mi (7,412.93 km) |
| Rock Island to Cusano Milanino | 4,659.31 mi (7,498.43 km) |
| Rock Island to Cutro | 5,253.26 mi (8,454.30 km) |
