| Williamsport to Clacton-on-Sea | 3,605.01 mi (5,801.71 km) |
| Williamsport to Clay Cross | 3,471.46 mi (5,586.77 km) |
| Williamsport to Clayton | 3,442.42 mi (5,540.03 km) |
| Williamsport to Clayton le Moors | 3,420.37 mi (5,504.56 km) |
| Williamsport to Cleckheaton | 3,447.30 mi (5,547.90 km) |
| Williamsport to Cleethorpes | 3,516.98 mi (5,660.04 km) |
| Williamsport to Clevedon | 3,452.41 mi (5,556.12 km) |
| Williamsport to Clifton | 3,486.52 mi (5,611.01 km) |
| Williamsport to Clifton | 3,466.06 mi (5,578.08 km) |
| Williamsport to Cliftonville | 3,625.58 mi (5,834.81 km) |
| Williamsport to Clitheroe | 3,418.08 mi (5,500.87 km) |
| Williamsport to Clydebank | 3,302.88 mi (5,315.46 km) |
| Williamsport to Coalville | 3,482.99 mi (5,605.33 km) |
| Williamsport to Coatbridge | 3,317.55 mi (5,339.08 km) |
| Williamsport to Cobham | 3,554.11 mi (5,719.79 km) |
