| Alpena to Clarkston (Georgia) | 779.31 mi (1,254.18 km) |
| Alpena to Clarksville (Indiana) | 481.66 mi (775.15 km) |
| Alpena to Clarksville (Tennessee) | 621.81 mi (1,000.71 km) |
| Alpena to Clawson (Michigan) | 175.90 mi (283.09 km) |
| Alpena to Clay (Alabama) | 804.03 mi (1,293.96 km) |
| Alpena to Clayton (California) | 2,031.08 mi (3,268.71 km) |
| Alpena to Clayton (Missouri) | 567.93 mi (914.00 km) |
| Alpena to Clayton (North Carolina) | 701.19 mi (1,128.46 km) |
| Alpena to Clayton (Ohio) | 362.47 mi (583.34 km) |
| Alpena to Clearfield (Utah) | 1,460.19 mi (2,349.95 km) |
| Alpena to Clearlake (California) | 2,034.94 mi (3,274.91 km) |
| Alpena to Clearwater (Florida) | 1,181.74 mi (1,901.82 km) |
| Alpena to Cleburne (Texas) | 1,154.01 mi (1,857.19 km) |
| Alpena to Clemmons (North Carolina) | 644.86 mi (1,037.80 km) |
| Alpena to Clemson (South Carolina) | 718.66 mi (1,156.58 km) |
