| Alpena to Cabestany | 4,087.18 mi (6,577.67 km) |
| Alpena to Cabries | 4,157.47 mi (6,690.80 km) |
| Alpena to Cachan | 3,832.03 mi (6,167.06 km) |
| Alpena to Caen | 3,712.82 mi (5,975.20 km) |
| Alpena to Cagnes-sur-Mer | 4,220.22 mi (6,791.79 km) |
| Alpena to Cahors | 3,956.51 mi (6,367.39 km) |
| Alpena to Calais | 3,738.24 mi (6,016.11 km) |
| Alpena to Caluire-et-Cuire | 4,043.06 mi (6,506.68 km) |
| Alpena to Cambrai | 3,817.39 mi (6,143.49 km) |
| Alpena to Canet-en-Roussillon | 4,088.87 mi (6,580.41 km) |
| Alpena to Cannes | 4,219.34 mi (6,790.38 km) |
| Alpena to Canteleu | 3,758.39 mi (6,048.55 km) |
| Alpena to Capbreton | 3,866.84 mi (6,223.08 km) |
| Alpena to Carcassonne | 4,041.73 mi (6,504.54 km) |
| Alpena to Carmaux | 4,001.32 mi (6,439.50 km) |
