| Grayslake to Carmona | 4,203.42 mi (6,764.75 km) |
| Grayslake to Cartagena | 4,410.06 mi (7,097.30 km) |
| Grayslake to Cartama | 4,278.27 mi (6,885.20 km) |
| Grayslake to Cartaya | 4,140.22 mi (6,663.04 km) |
| Grayslake to Caspe | 4,311.23 mi (6,938.25 km) |
| Grayslake to Cassa de la Selva | 4,410.41 mi (7,097.86 km) |
| Grayslake to Castalla | 4,384.97 mi (7,056.92 km) |
| Grayslake to Castellbisbal | 4,388.57 mi (7,062.73 km) |
| Grayslake to Castelldefels | 4,396.01 mi (7,074.69 km) |
| Grayslake to Castello de Ampurias | 4,404.42 mi (7,088.24 km) |
| Grayslake to Castellon de la Plana | 4,359.29 mi (7,015.60 km) |
| Grayslake to Castilleja de la Cuesta | 4,187.36 mi (6,738.90 km) |
| Grayslake to Catarroja | 4,365.43 mi (7,025.48 km) |
| Grayslake to Catral | 4,396.06 mi (7,074.78 km) |
| Grayslake to Caudete | 4,366.63 mi (7,027.41 km) |
