| Rockville to Chivasso | 4,170.45 mi (6,711.69 km) |
| Rockville to Ciampino | 4,490.76 mi (7,227.18 km) |
| Rockville to Cicciano | 4,606.28 mi (7,413.10 km) |
| Rockville to Cingoli | 4,462.07 mi (7,181.01 km) |
| Rockville to Cinisello Balsamo | 4,216.31 mi (6,785.50 km) |
| Rockville to Cinisi | 4,645.85 mi (7,476.77 km) |
| Rockville to Cirie | 4,156.62 mi (6,689.44 km) |
| Rockville to Ciro Marina | 4,781.33 mi (7,694.81 km) |
| Rockville to Cislago | 4,202.40 mi (6,763.11 km) |
| Rockville to Cisterna di Latina | 4,508.32 mi (7,255.44 km) |
| Rockville to Cisternino | 4,742.09 mi (7,631.66 km) |
| Rockville to Citta di Castello | 4,416.69 mi (7,107.98 km) |
| Rockville to Citta Sant'Angelo | 4,528.51 mi (7,287.93 km) |
| Rockville to Cittadella | 4,322.22 mi (6,955.95 km) |
| Rockville to Cittanova | 4,774.16 mi (7,683.27 km) |
