| Williamsport to Crawfordsville (Indiana) | 523.25 mi (842.09 km) |
| Williamsport to Crest Hill (Illinois) | 574.02 mi (923.80 km) |
| Williamsport to Crestview (Florida) | 898.75 mi (1,446.40 km) |
| Williamsport to Crestwood (Illinois) | 554.68 mi (892.67 km) |
| Williamsport to Crestwood (Missouri) | 730.25 mi (1,175.22 km) |
| Williamsport to Creve Coeur (Missouri) | 731.24 mi (1,176.81 km) |
| Williamsport to Crofton (Maryland) | 154.92 mi (249.32 km) |
| Williamsport to Crossville (Tennessee) | 565.01 mi (909.29 km) |
| Williamsport to Crowley (Louisiana) | 1,145.76 mi (1,843.93 km) |
| Williamsport to Crowley (Texas) | 1,267.80 mi (2,040.33 km) |
| Williamsport to Crown Point (Indiana) | 534.69 mi (860.51 km) |
| Williamsport to Crystal (Minnesota) | 862.01 mi (1,387.27 km) |
| Williamsport to Crystal Lake (Illinois) | 586.10 mi (943.24 km) |
| Williamsport to Cudahy (California) | 2,285.52 mi (3,678.19 km) |
| Williamsport to Cudahy (Wisconsin) | 567.07 mi (912.61 km) |
