| Ronkonkoma to Cloverleaf (Texas) | 1,451.47 mi (2,335.91 km) |
| Ronkonkoma to Cloverly (Maryland) | 236.34 mi (380.35 km) |
| Ronkonkoma to Clovis (California) | 2,492.05 mi (4,010.56 km) |
| Ronkonkoma to Clovis (New Mexico) | 1,694.08 mi (2,726.36 km) |
| Ronkonkoma to Clute (Texas) | 1,494.72 mi (2,405.52 km) |
| Ronkonkoma to Coachella (California) | 2,391.81 mi (3,849.25 km) |
| Ronkonkoma to Coalinga (California) | 2,542.56 mi (4,091.85 km) |
| Ronkonkoma to Coamo (Puerto Rico) | 1,620.80 mi (2,608.43 km) |
| Ronkonkoma to Coatesville (Pennsylvania) | 152.69 mi (245.74 km) |
| Ronkonkoma to Cockeysville (Maryland) | 206.44 mi (332.24 km) |
| Ronkonkoma to Cocoa (Florida) | 961.09 mi (1,546.72 km) |
| Ronkonkoma to Cocoa Beach (Florida) | 960.65 mi (1,546.02 km) |
| Ronkonkoma to Coconut Creek (Florida) | 1,081.72 mi (1,740.85 km) |
| Ronkonkoma to Coeur d'Alene (Idaho) | 2,182.60 mi (3,512.55 km) |
| Ronkonkoma to Cohoes (New York) | 139.35 mi (224.27 km) |
