| Webster Groves to Carrollwood (Florida) | 855.95 mi (1,377.52 km) |
| Webster Groves to Carson (California) | 1,583.19 mi (2,547.90 km) |
| Webster Groves to Carson City (Nevada) | 1,574.74 mi (2,534.30 km) |
| Webster Groves to Carteret (New Jersey) | 868.44 mi (1,397.62 km) |
| Webster Groves to Cartersville (Georgia) | 434.34 mi (699.00 km) |
| Webster Groves to Carthage (Missouri) | 238.07 mi (383.14 km) |
| Webster Groves to Cary (Illinois) | 273.92 mi (440.83 km) |
| Webster Groves to Cary (North Carolina) | 663.33 mi (1,067.52 km) |
| Webster Groves to Casa de Oro-Mount Helix (California) | 1,540.95 mi (2,479.92 km) |
| Webster Groves to Casa Grande (Arizona) | 1,259.52 mi (2,027.00 km) |
| Webster Groves to Casas Adobes (Arizona) | 1,236.57 mi (1,990.08 km) |
| Webster Groves to Cascades (Virginia) | 698.20 mi (1,123.65 km) |
| Webster Groves to Casper (Wyoming) | 884.68 mi (1,423.76 km) |
| Webster Groves to Casselberry (Florida) | 859.36 mi (1,383.00 km) |
| Webster Groves to Castaic (California) | 1,588.75 mi (2,556.84 km) |
