| Potomac to Chatteris | 3,652.93 mi (5,878.83 km) |
| Potomac to Cheadle | 3,560.51 mi (5,730.09 km) |
| Potomac to Cheadle Hulme | 3,544.91 mi (5,704.99 km) |
| Potomac to Cheam | 3,666.12 mi (5,900.06 km) |
| Potomac to Chellaston | 3,584.71 mi (5,769.04 km) |
| Potomac to Chelmsford | 3,685.95 mi (5,931.97 km) |
| Potomac to Chelsfield | 3,679.96 mi (5,922.32 km) |
| Potomac to Cheltenham | 3,578.88 mi (5,759.65 km) |
| Potomac to Chepstow | 3,559.23 mi (5,728.03 km) |
| Potomac to Cherry Hinton | 3,663.65 mi (5,896.07 km) |
| Potomac to Chertsey | 3,653.30 mi (5,879.42 km) |
| Potomac to Chesham | 3,642.04 mi (5,861.29 km) |
| Potomac to Cheshunt | 3,665.70 mi (5,899.37 km) |
| Potomac to Chester | 3,520.57 mi (5,665.80 km) |
| Potomac to Chester-le-Street | 3,541.59 mi (5,699.64 km) |
