| Ronkonkoma to Clarksdale (Mississippi) | 1,057.16 mi (1,701.34 km) |
| Ronkonkoma to Clarkston (Georgia) | 777.72 mi (1,251.63 km) |
| Ronkonkoma to Clarksville (Indiana) | 694.22 mi (1,117.23 km) |
| Ronkonkoma to Clarksville (Tennessee) | 819.47 mi (1,318.81 km) |
| Ronkonkoma to Clawson (Michigan) | 530.77 mi (854.19 km) |
| Ronkonkoma to Clay (Alabama) | 887.91 mi (1,428.95 km) |
| Ronkonkoma to Clayton (California) | 2,580.56 mi (4,153.01 km) |
| Ronkonkoma to Clayton (Missouri) | 924.88 mi (1,488.45 km) |
| Ronkonkoma to Clayton (North Carolina) | 457.93 mi (736.97 km) |
| Ronkonkoma to Clayton (Ohio) | 593.22 mi (954.70 km) |
| Ronkonkoma to Clearfield (Utah) | 2,012.79 mi (3,239.28 km) |
| Ronkonkoma to Clearlake (California) | 2,592.78 mi (4,172.67 km) |
| Ronkonkoma to Clearwater (Florida) | 1,041.08 mi (1,675.46 km) |
| Ronkonkoma to Cleburne (Texas) | 1,462.35 mi (2,353.43 km) |
| Ronkonkoma to Clemmons (North Carolina) | 512.73 mi (825.16 km) |
