| Rockville Centre to Butzbach | 3,831.43 mi (6,166.09 km) |
| Rockville Centre to Buxtehude | 3,788.31 mi (6,096.70 km) |
| Rockville Centre to Cadolzburg | 3,949.10 mi (6,355.46 km) |
| Rockville Centre to Calbe | 3,911.87 mi (6,295.55 km) |
| Rockville Centre to Calw | 3,883.95 mi (6,250.62 km) |
| Rockville Centre to Castrop-Rauxel | 3,747.21 mi (6,030.55 km) |
| Rockville Centre to Celle | 3,826.06 mi (6,157.45 km) |
| Rockville Centre to Cham | 4,028.11 mi (6,482.62 km) |
| Rockville Centre to Chemnitz | 3,988.33 mi (6,418.59 km) |
| Rockville Centre to Clausthal-Zellerfeld | 3,858.87 mi (6,210.25 km) |
| Rockville Centre to Cloppenburg | 3,741.71 mi (6,021.69 km) |
| Rockville Centre to Coburg | 3,928.55 mi (6,322.39 km) |
| Rockville Centre to Coesfeld | 3,730.74 mi (6,004.05 km) |
| Rockville Centre to Cologne | 3,749.05 mi (6,033.51 km) |
| Rockville Centre to Coswig | 4,005.01 mi (6,445.44 km) |
