| Webster Groves to Castrovillari | 5,306.55 mi (8,540.06 km) |
| Webster Groves to Catania | 5,362.45 mi (8,630.03 km) |
| Webster Groves to Catanzaro | 5,363.55 mi (8,631.80 km) |
| Webster Groves to Cattolica | 4,988.94 mi (8,028.92 km) |
| Webster Groves to Cava de' Tirreni | 5,206.69 mi (8,379.35 km) |
| Webster Groves to Cavallino | 5,365.08 mi (8,634.26 km) |
| Webster Groves to Cavarzere | 4,914.99 mi (7,909.92 km) |
| Webster Groves to Cave | 5,086.87 mi (8,186.52 km) |
| Webster Groves to Cavriago | 4,871.28 mi (7,839.56 km) |
| Webster Groves to Cavriglia | 4,957.40 mi (7,978.17 km) |
| Webster Groves to Cazzago San Martino | 4,815.94 mi (7,750.51 km) |
| Webster Groves to Ceccano | 5,113.76 mi (8,229.80 km) |
| Webster Groves to Cecina | 4,926.35 mi (7,928.19 km) |
| Webster Groves to Cefalu | 5,293.72 mi (8,519.43 km) |
| Webster Groves to Ceglie Messapico | 5,322.14 mi (8,565.16 km) |
