| Williamstown to Carmona | 3,651.57 mi (5,876.63 km) |
| Williamstown to Cartagena | 3,876.22 mi (6,238.17 km) |
| Williamstown to Cartama | 3,724.04 mi (5,993.27 km) |
| Williamstown to Cartaya | 3,581.60 mi (5,764.03 km) |
| Williamstown to Caspe | 3,811.44 mi (6,133.92 km) |
| Williamstown to Cassa de la Selva | 3,927.47 mi (6,320.66 km) |
| Williamstown to Castalla | 3,860.35 mi (6,212.63 km) |
| Williamstown to Castellbisbal | 3,898.55 mi (6,274.12 km) |
| Williamstown to Castelldefels | 3,904.24 mi (6,283.27 km) |
| Williamstown to Castello de Ampurias | 3,925.56 mi (6,317.58 km) |
| Williamstown to Castellon de la Plana | 3,848.66 mi (6,193.81 km) |
| Williamstown to Castilleja de la Cuesta | 3,633.37 mi (5,847.34 km) |
| Williamstown to Catarroja | 3,848.49 mi (6,193.55 km) |
| Williamstown to Catral | 3,867.38 mi (6,223.94 km) |
| Williamstown to Caudete | 3,841.70 mi (6,182.62 km) |
