| Rockville Centre to Carmona | 3,561.56 mi (5,731.78 km) |
| Rockville Centre to Cartagena | 3,784.82 mi (6,091.08 km) |
| Rockville Centre to Cartama | 3,634.31 mi (5,848.86 km) |
| Rockville Centre to Cartaya | 3,492.19 mi (5,620.13 km) |
| Rockville Centre to Caspe | 3,717.65 mi (5,982.99 km) |
| Rockville Centre to Cassa de la Selva | 3,832.84 mi (6,168.35 km) |
| Rockville Centre to Castalla | 3,768.23 mi (6,064.38 km) |
| Rockville Centre to Castellbisbal | 3,804.27 mi (6,122.38 km) |
| Rockville Centre to Castelldefels | 3,810.05 mi (6,131.69 km) |
| Rockville Centre to Castello de Ampurias | 3,830.72 mi (6,164.95 km) |
| Rockville Centre to Castellon de la Plana | 3,755.57 mi (6,044.00 km) |
| Rockville Centre to Castilleja de la Cuesta | 3,543.55 mi (5,702.79 km) |
| Rockville Centre to Catarroja | 3,755.82 mi (6,044.41 km) |
| Rockville Centre to Catral | 3,775.57 mi (6,076.19 km) |
| Rockville Centre to Caudete | 3,749.60 mi (6,034.39 km) |
