| Williamsport to Cosham | 3,539.29 mi (5,695.94 km) |
| Williamsport to Costessey | 3,586.30 mi (5,771.60 km) |
| Williamsport to Cottingham | 3,496.65 mi (5,627.32 km) |
| Williamsport to Coulsdon | 3,565.22 mi (5,737.67 km) |
| Williamsport to Coventry | 3,484.51 mi (5,607.78 km) |
| Williamsport to Cowdenbeath | 3,338.47 mi (5,372.75 km) |
| Williamsport to Cowes | 3,531.74 mi (5,683.78 km) |
| Williamsport to Cowley | 3,546.37 mi (5,707.33 km) |
| Williamsport to Cowley | 3,511.94 mi (5,651.92 km) |
| Williamsport to Cramlington | 3,424.25 mi (5,510.79 km) |
| Williamsport to Cranleigh | 3,556.01 mi (5,722.85 km) |
| Williamsport to Crawley | 3,568.48 mi (5,742.91 km) |
| Williamsport to Crayford | 3,574.95 mi (5,753.32 km) |
| Williamsport to Crewe | 3,432.44 mi (5,523.99 km) |
| Williamsport to Crigglestone | 3,456.68 mi (5,562.99 km) |
