| Ronkonkoma to Channelview (Texas) | 1,448.58 mi (2,331.26 km) |
| Ronkonkoma to Chantilly (Virginia) | 264.67 mi (425.95 km) |
| Ronkonkoma to Chaparral (New Mexico) | 1,933.32 mi (3,111.38 km) |
| Ronkonkoma to Chapel Hill (North Carolina) | 464.73 mi (747.92 km) |
| Ronkonkoma to Charleston (Illinois) | 799.28 mi (1,286.32 km) |
| Ronkonkoma to Charleston (South Carolina) | 668.72 mi (1,076.20 km) |
| Ronkonkoma to Charleston (West Virginia) | 483.54 mi (778.18 km) |
| Ronkonkoma to Charlotte (North Carolina) | 570.05 mi (917.41 km) |
| Ronkonkoma to Charlottesville (Virginia) | 343.99 mi (553.60 km) |
| Ronkonkoma to Chaska (Minnesota) | 1,071.47 mi (1,724.37 km) |
| Ronkonkoma to Chatham (Illinois) | 876.06 mi (1,409.88 km) |
| Ronkonkoma to Chattanooga (Tennessee) | 769.41 mi (1,238.25 km) |
| Ronkonkoma to Cheat Lake (West Virginia) | 363.55 mi (585.08 km) |
| Ronkonkoma to Chelsea (Alabama) | 904.58 mi (1,455.79 km) |
| Ronkonkoma to Chelsea (Massachusetts) | 154.22 mi (248.19 km) |
