| Portage to Carrollwood (Florida) | 992.28 mi (1,596.92 km) |
| Portage to Carson (California) | 1,856.44 mi (2,987.64 km) |
| Portage to Carson City (Nevada) | 1,790.15 mi (2,880.97 km) |
| Portage to Carteret (New Jersey) | 598.94 mi (963.91 km) |
| Portage to Cartersville (Georgia) | 556.85 mi (896.17 km) |
| Portage to Carthage (Missouri) | 580.31 mi (933.92 km) |
| Portage to Cary (Illinois) | 136.07 mi (218.99 km) |
| Portage to Cary (North Carolina) | 573.06 mi (922.25 km) |
| Portage to Casa de Oro-Mount Helix (California) | 1,827.17 mi (2,940.54 km) |
| Portage to Casa Grande (Arizona) | 1,562.54 mi (2,514.66 km) |
| Portage to Casas Adobes (Arizona) | 1,546.73 mi (2,489.22 km) |
| Portage to Cascades (Virginia) | 481.93 mi (775.60 km) |
| Portage to Casper (Wyoming) | 1,053.93 mi (1,696.13 km) |
| Portage to Casselberry (Florida) | 965.38 mi (1,553.63 km) |
| Portage to Castaic (California) | 1,855.20 mi (2,985.66 km) |
