| Portage to Conyers (Georgia) | 596.07 mi (959.28 km) |
| Portage to Cookeville (Tennessee) | 418.16 mi (672.96 km) |
| Portage to Coolidge (Arizona) | 1,549.79 mi (2,494.14 km) |
| Portage to Coon Rapids (Minnesota) | 436.76 mi (702.90 km) |
| Portage to Cooper City (Florida) | 1,155.98 mi (1,860.36 km) |
| Portage to Coos Bay (Oregon) | 1,943.41 mi (3,127.62 km) |
| Portage to Copiague (New York) | 640.07 mi (1,030.09 km) |
| Portage to Coppell (Texas) | 891.08 mi (1,434.06 km) |
| Portage to Copperas Cove (Texas) | 1,023.81 mi (1,647.66 km) |
| Portage to Coral Gables (Florida) | 1,179.20 mi (1,897.73 km) |
| Portage to Coral Springs (Florida) | 1,141.36 mi (1,836.84 km) |
| Portage to Coral Terrace (Florida) | 1,175.84 mi (1,892.33 km) |
| Portage to Coralville (Iowa) | 310.50 mi (499.71 km) |
| Portage to Coram (New York) | 656.55 mi (1,056.62 km) |
| Portage to Corcoran (California) | 1,855.72 mi (2,986.50 km) |
