| Webster Groves to Carlsbad (California) | 1,548.41 mi (2,491.93 km) |
| Webster Groves to Carlsbad (New Mexico) | 888.93 mi (1,430.60 km) |
| Webster Groves to Carmel (Indiana) | 244.37 mi (393.28 km) |
| Webster Groves to Carmichael (California) | 1,664.14 mi (2,678.18 km) |
| Webster Groves to Carney (Maryland) | 744.12 mi (1,197.54 km) |
| Webster Groves to Carnot-Moon (Pennsylvania) | 555.92 mi (894.66 km) |
| Webster Groves to Carol Stream (Illinois) | 258.31 mi (415.70 km) |
| Webster Groves to Carolina (Puerto Rico) | 2,020.99 mi (3,252.47 km) |
| Webster Groves to Carolina Forest (South Carolina) | 719.08 mi (1,157.25 km) |
| Webster Groves to Carpentersville (Illinois) | 267.39 mi (430.33 km) |
| Webster Groves to Carpinteria (California) | 1,638.17 mi (2,636.37 km) |
| Webster Groves to Carrboro (North Carolina) | 645.79 mi (1,039.30 km) |
| Webster Groves to Carroll (Iowa) | 338.07 mi (544.08 km) |
| Webster Groves to Carrollton (Georgia) | 453.90 mi (730.48 km) |
| Webster Groves to Carrollton (Texas) | 532.77 mi (857.41 km) |
