| Rockford to Carmona | 4,253.19 mi (6,844.85 km) |
| Rockford to Cartagena | 4,459.02 mi (7,176.09 km) |
| Rockford to Cartama | 4,328.10 mi (6,965.41 km) |
| Rockford to Cartaya | 4,190.27 mi (6,743.59 km) |
| Rockford to Caspe | 4,358.73 mi (7,014.70 km) |
| Rockford to Cassa de la Selva | 4,457.08 mi (7,172.97 km) |
| Rockford to Castalla | 4,433.54 mi (7,135.10 km) |
| Rockford to Castellbisbal | 4,435.59 mi (7,138.39 km) |
| Rockford to Castelldefels | 4,443.10 mi (7,150.49 km) |
| Rockford to Castello de Ampurias | 4,450.91 mi (7,163.04 km) |
| Rockford to Castellon de la Plana | 4,407.26 mi (7,092.80 km) |
| Rockford to Castilleja de la Cuesta | 4,237.22 mi (6,819.14 km) |
| Rockford to Catarroja | 4,413.68 mi (7,103.13 km) |
| Rockford to Catral | 4,444.81 mi (7,153.22 km) |
| Rockford to Caudete | 4,415.22 mi (7,105.62 km) |
