| Ronkonkoma to Carlsbad (California) | 2,467.95 mi (3,971.78 km) |
| Ronkonkoma to Carlsbad (New Mexico) | 1,809.67 mi (2,912.38 km) |
| Ronkonkoma to Carmel (Indiana) | 687.12 mi (1,105.81 km) |
| Ronkonkoma to Carmichael (California) | 2,533.67 mi (4,077.55 km) |
| Ronkonkoma to Carney (Maryland) | 203.95 mi (328.22 km) |
| Ronkonkoma to Carnot-Moon (Pennsylvania) | 372.19 mi (598.98 km) |
| Ronkonkoma to Carol Stream (Illinois) | 780.99 mi (1,256.88 km) |
| Ronkonkoma to Carolina (Puerto Rico) | 1,604.53 mi (2,582.24 km) |
| Ronkonkoma to Carolina Forest (South Carolina) | 580.85 mi (934.78 km) |
| Ronkonkoma to Carpentersville (Illinois) | 789.41 mi (1,270.44 km) |
| Ronkonkoma to Carpinteria (California) | 2,547.52 mi (4,099.85 km) |
| Ronkonkoma to Carrboro (North Carolina) | 466.62 mi (750.94 km) |
| Ronkonkoma to Carroll (Iowa) | 1,126.44 mi (1,812.83 km) |
| Ronkonkoma to Carrollton (Georgia) | 824.69 mi (1,327.22 km) |
| Ronkonkoma to Carrollton (Texas) | 1,414.63 mi (2,276.62 km) |
