| Webster Groves to Carmona | 4,430.32 mi (7,129.91 km) |
| Webster Groves to Cartagena | 4,643.88 mi (7,473.60 km) |
| Webster Groves to Cartama | 4,504.41 mi (7,249.15 km) |
| Webster Groves to Cartaya | 4,364.38 mi (7,023.79 km) |
| Webster Groves to Caspe | 4,555.55 mi (7,331.44 km) |
| Webster Groves to Cassa de la Selva | 4,659.59 mi (7,498.88 km) |
| Webster Groves to Castalla | 4,621.82 mi (7,438.11 km) |
| Webster Groves to Castellbisbal | 4,635.80 mi (7,460.60 km) |
| Webster Groves to Castelldefels | 4,642.77 mi (7,471.82 km) |
| Webster Groves to Castello de Ampurias | 4,654.66 mi (7,490.95 km) |
| Webster Groves to Castellon de la Plana | 4,600.51 mi (7,403.80 km) |
| Webster Groves to Castilleja de la Cuesta | 4,413.41 mi (7,102.69 km) |
| Webster Groves to Catarroja | 4,604.71 mi (7,410.56 km) |
| Webster Groves to Catral | 4,631.60 mi (7,453.84 km) |
| Webster Groves to Caudete | 4,603.35 mi (7,408.37 km) |
