| Rockford to Butzbach | 4,348.11 mi (6,997.61 km) |
| Rockford to Buxtehude | 4,266.58 mi (6,866.40 km) |
| Rockford to Cadolzburg | 4,467.49 mi (7,189.74 km) |
| Rockford to Calbe | 4,400.00 mi (7,081.11 km) |
| Rockford to Calw | 4,418.76 mi (7,111.31 km) |
| Rockford to Castrop-Rauxel | 4,256.64 mi (6,850.39 km) |
| Rockford to Celle | 4,312.72 mi (6,940.66 km) |
| Rockford to Cham | 4,541.45 mi (7,308.75 km) |
| Rockford to Chemnitz | 4,483.46 mi (7,215.43 km) |
| Rockford to Clausthal-Zellerfeld | 4,353.83 mi (7,006.81 km) |
| Rockford to Cloppenburg | 4,233.44 mi (6,813.07 km) |
| Rockford to Coburg | 4,437.84 mi (7,142.02 km) |
| Rockford to Coesfeld | 4,236.16 mi (6,817.44 km) |
| Rockford to Cologne | 4,266.76 mi (6,866.68 km) |
| Rockford to Coswig | 4,494.11 mi (7,232.57 km) |
