| Rockford to Cadiz | 4,257.97 mi (6,852.54 km) |
| Rockford to Calafell | 4,428.84 mi (7,127.53 km) |
| Rockford to Calahorra | 4,235.00 mi (6,815.58 km) |
| Rockford to Calasparra | 4,402.03 mi (7,084.38 km) |
| Rockford to Calatayud | 4,285.04 mi (6,896.11 km) |
| Rockford to Caldas de Montbuy | 4,437.32 mi (7,141.17 km) |
| Rockford to Caldas de Reyes | 3,932.71 mi (6,329.09 km) |
| Rockford to Calella | 4,459.00 mi (7,176.06 km) |
| Rockford to Callosa de Segura | 4,442.93 mi (7,150.20 km) |
| Rockford to Calpe | 4,463.31 mi (7,183.00 km) |
| Rockford to Calvia | 4,534.18 mi (7,297.06 km) |
| Rockford to Camas | 4,237.28 mi (6,819.25 km) |
| Rockford to Cambados | 3,929.03 mi (6,323.17 km) |
| Rockford to Cambre | 3,923.18 mi (6,313.75 km) |
| Rockford to Cambrils | 4,412.09 mi (7,100.57 km) |
