| Williamsport to Cibolo (Texas) | 1,433.56 mi (2,307.08 km) |
| Williamsport to Cicero (Illinois) | 555.70 mi (894.31 km) |
| Williamsport to Cimarron Hills (Colorado) | 1,466.03 mi (2,359.35 km) |
| Williamsport to Cincinnati (Ohio) | 419.86 mi (675.71 km) |
| Williamsport to Cinco Ranch (Texas) | 1,314.59 mi (2,115.62 km) |
| Williamsport to Circleville (Ohio) | 329.96 mi (531.02 km) |
| Williamsport to Citrus (California) | 2,265.81 mi (3,646.47 km) |
| Williamsport to Citrus Heights (California) | 2,324.50 mi (3,740.92 km) |
| Williamsport to Citrus Park (Florida) | 961.86 mi (1,547.97 km) |
| Williamsport to Claiborne (Louisiana) | 1,028.75 mi (1,655.61 km) |
| Williamsport to Claremont (California) | 2,256.50 mi (3,631.48 km) |
| Williamsport to Claremont (New Hampshire) | 281.93 mi (453.72 km) |
| Williamsport to Claremore (Oklahoma) | 1,054.20 mi (1,696.56 km) |
| Williamsport to Clarksburg (Maryland) | 139.77 mi (224.93 km) |
| Williamsport to Clarksburg (West Virginia) | 219.61 mi (353.43 km) |
