| Key Largo to Chivasso | 4,928.32 mi (7,931.37 km) |
| Key Largo to Ciampino | 5,228.26 mi (8,414.08 km) |
| Key Largo to Cicciano | 5,342.68 mi (8,598.21 km) |
| Key Largo to Cingoli | 5,218.64 mi (8,398.59 km) |
| Key Largo to Cinisello Balsamo | 4,982.36 mi (8,018.33 km) |
| Key Largo to Cinisi | 5,345.37 mi (8,602.54 km) |
| Key Largo to Cirie | 4,914.07 mi (7,908.44 km) |
| Key Largo to Ciro Marina | 5,512.14 mi (8,870.93 km) |
| Key Largo to Cislago | 4,968.74 mi (7,996.41 km) |
| Key Largo to Cisterna di Latina | 5,244.46 mi (8,440.15 km) |
| Key Largo to Cisternino | 5,488.27 mi (8,832.52 km) |
| Key Largo to Citta di Castello | 5,170.68 mi (8,321.40 km) |
| Key Largo to Citta Sant'Angelo | 5,279.32 mi (8,496.25 km) |
| Key Largo to Cittadella | 5,097.62 mi (8,203.83 km) |
| Key Largo to Cittanova | 5,489.44 mi (8,834.41 km) |
