| Webster Groves to Cadiz | 4,430.98 mi (7,130.97 km) |
| Webster Groves to Calafell | 4,627.74 mi (7,447.62 km) |
| Webster Groves to Calahorra | 4,432.31 mi (7,133.11 km) |
| Webster Groves to Calasparra | 4,587.66 mi (7,383.13 km) |
| Webster Groves to Calatayud | 4,480.02 mi (7,209.89 km) |
| Webster Groves to Caldas de Montbuy | 4,638.20 mi (7,464.47 km) |
| Webster Groves to Caldas de Reyes | 4,122.32 mi (6,634.23 km) |
| Webster Groves to Calella | 4,660.50 mi (7,500.35 km) |
| Webster Groves to Callosa de Segura | 4,629.50 mi (7,450.46 km) |
| Webster Groves to Calpe | 4,652.81 mi (7,487.97 km) |
| Webster Groves to Calvia | 4,729.90 mi (7,612.04 km) |
| Webster Groves to Camas | 4,413.56 mi (7,102.94 km) |
| Webster Groves to Cambados | 4,118.09 mi (6,627.43 km) |
| Webster Groves to Cambre | 4,115.40 mi (6,623.09 km) |
| Webster Groves to Cambrils | 4,609.92 mi (7,418.94 km) |
