| Webster Groves to Cividale del Friuli | 4,927.95 mi (7,930.77 km) |
| Webster Groves to Civita Castellana | 5,045.43 mi (8,119.84 km) |
| Webster Groves to Civitanova Marche | 5,056.63 mi (8,137.85 km) |
| Webster Groves to Civitavecchia | 5,028.66 mi (8,092.84 km) |
| Webster Groves to Civitella in Val di Chiana | 4,970.92 mi (7,999.93 km) |
| Webster Groves to Clusone | 4,801.03 mi (7,726.51 km) |
| Webster Groves to Coccaglio | 4,814.79 mi (7,748.65 km) |
| Webster Groves to Codigoro | 4,928.79 mi (7,932.12 km) |
| Webster Groves to Codogno | 4,819.85 mi (7,756.80 km) |
| Webster Groves to Codroipo | 4,916.14 mi (7,911.76 km) |
| Webster Groves to Cogoleto | 4,807.47 mi (7,736.87 km) |
| Webster Groves to Colle di Val d'Elsa | 4,948.02 mi (7,963.06 km) |
| Webster Groves to Colle Salvetti | 4,913.53 mi (7,907.57 km) |
| Webster Groves to Collecchio | 4,856.61 mi (7,815.95 km) |
| Webster Groves to Colleferro | 5,093.79 mi (8,197.66 km) |
