| Alpena to Corinth (Mississippi) | 749.03 mi (1,205.45 km) |
| Alpena to Corinth (Texas) | 1,098.44 mi (1,767.77 km) |
| Alpena to Cornelius (North Carolina) | 676.88 mi (1,089.34 km) |
| Alpena to Cornelius (Oregon) | 1,905.66 mi (3,066.86 km) |
| Alpena to Corning (New York) | 377.85 mi (608.08 km) |
| Alpena to Corona (California) | 1,959.79 mi (3,153.98 km) |
| Alpena to Coronado (California) | 1,987.33 mi (3,198.29 km) |
| Alpena to Corpus Christi (Texas) | 1,422.79 mi (2,289.76 km) |
| Alpena to Corsicana (Texas) | 1,137.45 mi (1,830.54 km) |
| Alpena to Cortland (New York) | 400.04 mi (643.80 km) |
| Alpena to Corvallis (Oregon) | 1,932.69 mi (3,110.37 km) |
| Alpena to Coshocton (Ohio) | 342.17 mi (550.67 km) |
| Alpena to Costa Mesa (California) | 1,983.92 mi (3,192.81 km) |
| Alpena to Coto de Caza (California) | 1,970.99 mi (3,172.00 km) |
| Alpena to Cottage Grove (Minnesota) | 464.03 mi (746.78 km) |
