| Rockville Centre to Cortona | 4,196.56 mi (6,753.71 km) |
| Rockville Centre to Cosenza | 4,529.18 mi (7,289.02 km) |
| Rockville Centre to Cossato | 3,955.47 mi (6,365.72 km) |
| Rockville Centre to Costa Volpino | 4,030.08 mi (6,485.78 km) |
| Rockville Centre to Creazzo | 4,098.70 mi (6,596.22 km) |
| Rockville Centre to Crema | 4,027.14 mi (6,481.06 km) |
| Rockville Centre to Cremona | 4,049.73 mi (6,517.40 km) |
| Rockville Centre to Crevalcore | 4,111.47 mi (6,616.77 km) |
| Rockville Centre to Crispiano | 4,522.97 mi (7,279.02 km) |
| Rockville Centre to Crosia | 4,541.94 mi (7,309.54 km) |
| Rockville Centre to Crotone | 4,576.08 mi (7,364.49 km) |
| Rockville Centre to Cuneo | 3,965.69 mi (6,382.16 km) |
| Rockville Centre to Cuorgne | 3,938.60 mi (6,338.56 km) |
| Rockville Centre to Cusano Milanino | 3,999.80 mi (6,437.06 km) |
| Rockville Centre to Cutro | 4,572.06 mi (7,358.03 km) |
