| Alpena to Cloverly (Maryland) | 527.90 mi (849.57 km) |
| Alpena to Clovis (California) | 1,956.88 mi (3,149.30 km) |
| Alpena to Clovis (New Mexico) | 1,275.39 mi (2,052.55 km) |
| Alpena to Clute (Texas) | 1,286.85 mi (2,070.98 km) |
| Alpena to Coachella (California) | 1,898.56 mi (3,055.43 km) |
| Alpena to Coalinga (California) | 2,010.95 mi (3,236.32 km) |
| Alpena to Coamo (Puerto Rico) | 2,108.90 mi (3,393.95 km) |
| Alpena to Coatesville (Pennsylvania) | 523.19 mi (842.00 km) |
| Alpena to Cockeysville (Maryland) | 519.81 mi (836.55 km) |
| Alpena to Cocoa (Florida) | 1,162.58 mi (1,871.00 km) |
| Alpena to Cocoa Beach (Florida) | 1,166.96 mi (1,878.04 km) |
| Alpena to Coconut Creek (Florida) | 1,311.02 mi (2,109.88 km) |
| Alpena to Coeur d'Alene (Idaho) | 1,587.45 mi (2,554.75 km) |
| Alpena to Cohoes (New York) | 509.38 mi (819.77 km) |
| Alpena to Cold Springs (Nevada) | 1,884.69 mi (3,033.12 km) |
