| Williamsport to Clemson (South Carolina) | 551.22 mi (887.10 km) |
| Williamsport to Clermont (Florida) | 916.85 mi (1,475.53 km) |
| Williamsport to Cleveland (Mississippi) | 910.16 mi (1,464.76 km) |
| Williamsport to Cleveland (Ohio) | 241.34 mi (388.40 km) |
| Williamsport to Cleveland (Tennessee) | 596.23 mi (959.54 km) |
| Williamsport to Cleveland Heights (Ohio) | 235.41 mi (378.86 km) |
| Williamsport to Cliffside Park (New Jersey) | 161.51 mi (259.93 km) |
| Williamsport to Clifton (Colorado) | 1,657.00 mi (2,666.68 km) |
| Williamsport to Clifton (New Jersey) | 152.27 mi (245.06 km) |
| Williamsport to Clinton (Iowa) | 683.45 mi (1,099.90 km) |
| Williamsport to Clinton (Maryland) | 172.18 mi (277.10 km) |
| Williamsport to Clinton (Mississippi) | 956.51 mi (1,539.35 km) |
| Williamsport to Clinton (Utah) | 1,808.79 mi (2,910.96 km) |
| Williamsport to Clive (Iowa) | 867.34 mi (1,395.85 km) |
| Williamsport to Cloquet (Minnesota) | 854.68 mi (1,375.47 km) |
