| Alpena to Castle Rock (Colorado) | 1,159.97 mi (1,866.79 km) |
| Alpena to Castro Valley (California) | 2,044.72 mi (3,290.65 km) |
| Alpena to Catalina Foothills (Arizona) | 1,710.50 mi (2,752.78 km) |
| Alpena to Cataño (Puerto Rico) | 2,092.12 mi (3,366.95 km) |
| Alpena to Cathedral City (California) | 1,908.21 mi (3,070.97 km) |
| Alpena to Catonsville (Maryland) | 527.59 mi (849.07 km) |
| Alpena to Cave Spring (Virginia) | 570.79 mi (918.60 km) |
| Alpena to Cayce (South Carolina) | 779.32 mi (1,254.20 km) |
| Alpena to Cayey (Puerto Rico) | 2,111.89 mi (3,398.75 km) |
| Alpena to Cedar City (Utah) | 1,609.45 mi (2,590.17 km) |
| Alpena to Cedar Falls (Iowa) | 482.58 mi (776.64 km) |
| Alpena to Cedar Hill (Texas) | 1,125.80 mi (1,811.80 km) |
| Alpena to Cedar Lake (Indiana) | 325.55 mi (523.93 km) |
| Alpena to Cedar Mill (Oregon) | 1,893.60 mi (3,047.46 km) |
| Alpena to Cedar Park (Texas) | 1,272.15 mi (2,047.33 km) |
