| Alpena to Carson (California) | 1,993.81 mi (3,208.72 km) |
| Alpena to Carson City (Nevada) | 1,888.65 mi (3,039.50 km) |
| Alpena to Carteret (New Jersey) | 559.88 mi (901.04 km) |
| Alpena to Cartersville (Georgia) | 757.22 mi (1,218.63 km) |
| Alpena to Carthage (Missouri) | 786.48 mi (1,265.71 km) |
| Alpena to Cary (Illinois) | 311.19 mi (500.81 km) |
| Alpena to Cary (North Carolina) | 686.17 mi (1,104.28 km) |
| Alpena to Casa de Oro-Mount Helix (California) | 1,974.28 mi (3,177.30 km) |
| Alpena to Casa Grande (Arizona) | 1,724.92 mi (2,776.00 km) |
| Alpena to Casas Adobes (Arizona) | 1,714.65 mi (2,759.47 km) |
| Alpena to Cascades (Virginia) | 519.14 mi (835.47 km) |
| Alpena to Casper (Wyoming) | 1,144.50 mi (1,841.90 km) |
| Alpena to Casselberry (Florida) | 1,139.85 mi (1,834.41 km) |
| Alpena to Castaic (California) | 1,987.74 mi (3,198.97 km) |
| Alpena to Castle Pines (Colorado) | 1,158.11 mi (1,863.80 km) |
