| Webster Groves to Candler-McAfee (Georgia) | 477.14 mi (767.88 km) |
| Webster Groves to Caño Martin Peña (Puerto Rico) | 2,016.57 mi (3,245.36 km) |
| Webster Groves to Cañon City (Colorado) | 802.86 mi (1,292.08 km) |
| Webster Groves to Canóvanas (Puerto Rico) | 2,026.25 mi (3,260.94 km) |
| Webster Groves to Canton (Georgia) | 442.81 mi (712.63 km) |
| Webster Groves to Canton (Illinois) | 137.59 mi (221.42 km) |
| Webster Groves to Canton (Mississippi) | 414.20 mi (666.59 km) |
| Webster Groves to Canton (Ohio) | 501.53 mi (807.13 km) |
| Webster Groves to Canyon (Texas) | 685.81 mi (1,103.71 km) |
| Webster Groves to Canyon Lake (California) | 1,533.21 mi (2,467.46 km) |
| Webster Groves to Canyon Lake (Texas) | 751.78 mi (1,209.87 km) |
| Webster Groves to Cape Coral (Florida) | 956.79 mi (1,539.81 km) |
| Webster Groves to Cape Girardeau (Missouri) | 98.20 mi (158.04 km) |
| Webster Groves to Carbondale (Illinois) | 85.68 mi (137.89 km) |
| Webster Groves to Carlisle (Pennsylvania) | 710.32 mi (1,143.15 km) |
