| Rockville Centre to Chivasso | 3,955.08 mi (6,365.09 km) |
| Rockville Centre to Ciampino | 4,275.00 mi (6,879.95 km) |
| Rockville Centre to Cicciano | 4,390.54 mi (7,065.89 km) |
| Rockville Centre to Cingoli | 4,246.79 mi (6,834.55 km) |
| Rockville Centre to Cinisello Balsamo | 4,001.24 mi (6,439.37 km) |
| Rockville Centre to Cinisi | 4,429.75 mi (7,128.99 km) |
| Rockville Centre to Cirie | 3,941.23 mi (6,342.80 km) |
| Rockville Centre to Ciro Marina | 4,565.53 mi (7,347.51 km) |
| Rockville Centre to Cislago | 3,987.33 mi (6,416.99 km) |
| Rockville Centre to Cisterna di Latina | 4,292.54 mi (6,908.18 km) |
| Rockville Centre to Cisternino | 4,526.62 mi (7,284.89 km) |
| Rockville Centre to Citta di Castello | 4,201.32 mi (6,761.36 km) |
| Rockville Centre to Citta Sant'Angelo | 4,313.08 mi (6,941.24 km) |
| Rockville Centre to Cittadella | 4,107.58 mi (6,610.52 km) |
| Rockville Centre to Cittanova | 4,558.15 mi (7,335.63 km) |
