| Ronkonkoma to Crawfordsville (Indiana) | 725.60 mi (1,167.74 km) |
| Ronkonkoma to Crest Hill (Illinois) | 780.13 mi (1,255.51 km) |
| Ronkonkoma to Crestview (Florida) | 1,023.18 mi (1,646.64 km) |
| Ronkonkoma to Crestwood (Illinois) | 760.81 mi (1,224.41 km) |
| Ronkonkoma to Crestwood (Missouri) | 928.94 mi (1,494.98 km) |
| Ronkonkoma to Creve Coeur (Missouri) | 930.45 mi (1,497.42 km) |
| Ronkonkoma to Crofton (Maryland) | 225.34 mi (362.65 km) |
| Ronkonkoma to Crossville (Tennessee) | 725.84 mi (1,168.13 km) |
| Ronkonkoma to Crowley (Louisiana) | 1,301.94 mi (2,095.27 km) |
| Ronkonkoma to Crowley (Texas) | 1,451.81 mi (2,336.47 km) |
| Ronkonkoma to Crown Point (Indiana) | 740.70 mi (1,192.05 km) |
| Ronkonkoma to Crystal (Minnesota) | 1,061.62 mi (1,708.52 km) |
| Ronkonkoma to Crystal Lake (Illinois) | 791.98 mi (1,274.57 km) |
| Ronkonkoma to Cudahy (California) | 2,490.53 mi (4,008.12 km) |
| Ronkonkoma to Cudahy (Wisconsin) | 771.56 mi (1,241.70 km) |
