| Williamsport to Cullman (Alabama) | 723.88 mi (1,164.98 km) |
| Williamsport to Culpeper (Virginia) | 198.05 mi (318.73 km) |
| Williamsport to Culver City (California) | 2,295.38 mi (3,694.06 km) |
| Williamsport to Cumberland (Maryland) | 142.25 mi (228.93 km) |
| Williamsport to Cupertino (California) | 2,395.56 mi (3,855.29 km) |
| Williamsport to Cutler Bay (Florida) | 1,098.59 mi (1,768.01 km) |
| Williamsport to Cutlerville (Michigan) | 456.52 mi (734.70 km) |
| Williamsport to Cuyahoga Falls (Ohio) | 233.12 mi (375.17 km) |
| Williamsport to Cypress (California) | 2,282.29 mi (3,672.99 km) |
| Williamsport to Cypress Gardens (Florida) | 951.57 mi (1,531.40 km) |
| Williamsport to Cypress Lake (Florida) | 1,052.83 mi (1,694.37 km) |
| Williamsport to D'Iberville (Mississippi) | 995.57 mi (1,602.22 km) |
| Williamsport to Dakota Ridge (Colorado) | 1,475.55 mi (2,374.67 km) |
| Williamsport to Dale City (Virginia) | 179.88 mi (289.48 km) |
| Williamsport to Dallas (Georgia) | 661.79 mi (1,065.05 km) |
