| Alpena to Caguas (Puerto Rico) | 2,107.91 mi (3,392.36 km) |
| Alpena to Cahokia (Illinois) | 567.60 mi (913.46 km) |
| Alpena to Calabasas (California) | 2,002.33 mi (3,222.44 km) |
| Alpena to Caldwell (Idaho) | 1,632.42 mi (2,627.13 km) |
| Alpena to Caledonia (Wisconsin) | 270.91 mi (435.99 km) |
| Alpena to Calera (Alabama) | 844.17 mi (1,358.56 km) |
| Alpena to Calexico (California) | 1,907.87 mi (3,070.41 km) |
| Alpena to Calhoun (Georgia) | 735.49 mi (1,183.66 km) |
| Alpena to California (Maryland) | 589.17 mi (948.17 km) |
| Alpena to California City (California) | 1,926.51 mi (3,100.42 km) |
| Alpena to Callaway (Florida) | 1,038.57 mi (1,671.42 km) |
| Alpena to Calumet City (Illinois) | 315.87 mi (508.34 km) |
| Alpena to Calverton (Maryland) | 532.21 mi (856.51 km) |
| Alpena to Camano (Washington) | 1,844.17 mi (2,967.91 km) |
| Alpena to Camarillo (California) | 2,016.62 mi (3,245.43 km) |
