| Williamsport to Carlsbad (California) | 2,263.77 mi (3,643.19 km) |
| Williamsport to Carlsbad (New Mexico) | 1,615.27 mi (2,599.52 km) |
| Williamsport to Carmel (Indiana) | 485.66 mi (781.59 km) |
| Williamsport to Carmichael (California) | 2,327.86 mi (3,746.33 km) |
| Williamsport to Carney (Maryland) | 129.63 mi (208.62 km) |
| Williamsport to Carnot-Moon (Pennsylvania) | 173.47 mi (279.17 km) |
| Williamsport to Carol Stream (Illinois) | 574.88 mi (925.18 km) |
| Williamsport to Carolina (Puerto Rico) | 1,707.79 mi (2,748.42 km) |
| Williamsport to Carolina Forest (South Carolina) | 526.56 mi (847.41 km) |
| Williamsport to Carpentersville (Illinois) | 583.43 mi (938.94 km) |
| Williamsport to Carpinteria (California) | 2,342.03 mi (3,769.13 km) |
| Williamsport to Carrboro (North Carolina) | 383.47 mi (617.14 km) |
| Williamsport to Carroll (Iowa) | 920.44 mi (1,481.31 km) |
| Williamsport to Carrollton (Georgia) | 688.53 mi (1,108.08 km) |
| Williamsport to Carrollton (Texas) | 1,229.90 mi (1,979.33 km) |
