| Alpena to Corato | 4,696.57 mi (7,558.40 km) |
| Alpena to Corbetta | 4,216.82 mi (6,786.32 km) |
| Alpena to Corciano | 4,447.02 mi (7,156.78 km) |
| Alpena to Cordenons | 4,340.94 mi (6,986.06 km) |
| Alpena to Cori | 4,536.93 mi (7,301.48 km) |
| Alpena to Coriano | 4,423.38 mi (7,118.74 km) |
| Alpena to Corigliano Calabro | 4,772.29 mi (7,680.25 km) |
| Alpena to Corleone | 4,723.80 mi (7,602.22 km) |
| Alpena to Cormano | 4,223.17 mi (6,796.54 km) |
| Alpena to Cornaredo | 4,220.01 mi (6,791.46 km) |
| Alpena to Cornate d'Adda | 4,230.75 mi (6,808.73 km) |
| Alpena to Cornedo Vicentino | 4,304.90 mi (6,928.06 km) |
| Alpena to Correggio | 4,318.46 mi (6,949.88 km) |
| Alpena to Corridonia | 4,490.18 mi (7,226.25 km) |
| Alpena to Corsico | 4,226.00 mi (6,801.09 km) |
