| Rockville Centre to Cernavoda | 4,821.19 mi (7,758.96 km) |
| Rockville Centre to Chitila | 4,733.34 mi (7,617.57 km) |
| Rockville Centre to Cisnadie | 4,612.24 mi (7,422.68 km) |
| Rockville Centre to Cluj-Napoca | 4,548.43 mi (7,319.99 km) |
| Rockville Centre to Codlea | 4,663.69 mi (7,505.48 km) |
| Rockville Centre to Comanesti | 4,672.97 mi (7,520.42 km) |
| Rockville Centre to Comarnic | 4,689.28 mi (7,546.67 km) |
| Rockville Centre to Constanta | 4,851.90 mi (7,808.37 km) |
| Rockville Centre to Corabia | 4,704.21 mi (7,570.69 km) |
| Rockville Centre to Costesti | 4,683.00 mi (7,536.55 km) |
| Rockville Centre to Covasna | 4,686.41 mi (7,542.04 km) |
| Rockville Centre to Craiova | 4,653.96 mi (7,489.82 km) |
| Rockville Centre to Cristuru Secuiesc | 4,623.81 mi (7,441.31 km) |
| Rockville Centre to Cugir | 4,575.95 mi (7,364.29 km) |
| Rockville Centre to Cumpana | 4,851.16 mi (7,807.19 km) |
