| Webster Groves to Cullman (Alabama) | 361.87 mi (582.38 km) |
| Webster Groves to Culpeper (Virginia) | 667.31 mi (1,073.94 km) |
| Webster Groves to Culver City (California) | 1,586.84 mi (2,553.78 km) |
| Webster Groves to Cumberland (Maryland) | 625.50 mi (1,006.64 km) |
| Webster Groves to Cupertino (California) | 1,720.32 mi (2,768.59 km) |
| Webster Groves to Cutler Bay (Florida) | 1,071.71 mi (1,724.76 km) |
| Webster Groves to Cutlerville (Michigan) | 382.59 mi (615.72 km) |
| Webster Groves to Cuyahoga Falls (Ohio) | 500.83 mi (806.00 km) |
| Webster Groves to Cypress (California) | 1,571.96 mi (2,529.82 km) |
| Webster Groves to Cypress Gardens (Florida) | 885.17 mi (1,424.54 km) |
| Webster Groves to Cypress Lake (Florida) | 965.99 mi (1,554.62 km) |
| Webster Groves to D'Iberville (Mississippi) | 566.79 mi (912.15 km) |
| Webster Groves to Dakota Ridge (Colorado) | 794.76 mi (1,279.05 km) |
| Webster Groves to Dale City (Virginia) | 701.69 mi (1,129.26 km) |
| Webster Groves to Dallas (Georgia) | 445.38 mi (716.78 km) |
