| Webster Groves to Cortona | 4,987.68 mi (8,026.90 km) |
| Webster Groves to Cosenza | 5,331.42 mi (8,580.09 km) |
| Webster Groves to Cossato | 4,742.36 mi (7,632.08 km) |
| Webster Groves to Costa Volpino | 4,809.00 mi (7,739.34 km) |
| Webster Groves to Creazzo | 4,875.39 mi (7,846.17 km) |
| Webster Groves to Crema | 4,810.82 mi (7,742.27 km) |
| Webster Groves to Cremona | 4,834.02 mi (7,779.60 km) |
| Webster Groves to Crevalcore | 4,895.21 mi (7,878.08 km) |
| Webster Groves to Crispiano | 5,313.68 mi (8,551.54 km) |
| Webster Groves to Crosia | 5,340.75 mi (8,595.10 km) |
| Webster Groves to Crotone | 5,376.58 mi (8,652.78 km) |
| Webster Groves to Cuneo | 4,762.96 mi (7,665.24 km) |
| Webster Groves to Cuorgne | 4,728.34 mi (7,609.53 km) |
| Webster Groves to Cusano Milanino | 4,783.69 mi (7,698.60 km) |
| Webster Groves to Cutro | 5,373.34 mi (8,647.56 km) |
