| Potomac to Chesterfield | 3,577.84 mi (5,757.97 km) |
| Potomac to Chichester | 3,654.34 mi (5,881.09 km) |
| Potomac to Chigwell | 3,671.81 mi (5,909.21 km) |
| Potomac to Childwall | 3,517.13 mi (5,660.28 km) |
| Potomac to Chilwell | 3,591.85 mi (5,780.52 km) |
| Potomac to Chingford | 3,669.23 mi (5,905.05 km) |
| Potomac to Chippenham | 3,585.91 mi (5,770.97 km) |
| Potomac to Chislehurst | 3,676.60 mi (5,916.92 km) |
| Potomac to Choppington | 3,535.26 mi (5,689.46 km) |
| Potomac to Chorley | 3,522.25 mi (5,668.51 km) |
| Potomac to Chorleywood | 3,647.53 mi (5,870.13 km) |
| Potomac to Christchurch | 3,615.20 mi (5,818.10 km) |
| Potomac to Churchdown | 3,575.07 mi (5,753.53 km) |
| Potomac to Cinderford | 3,562.81 mi (5,733.79 km) |
| Potomac to Cirencester | 3,586.61 mi (5,772.09 km) |
