| Portage to Camarillo (California) | 1,883.65 mi (3,031.45 km) |
| Portage to Camas (Washington) | 1,832.69 mi (2,949.43 km) |
| Portage to Cambridge (Maryland) | 560.10 mi (901.39 km) |
| Portage to Cambridge (Massachusetts) | 738.92 mi (1,189.18 km) |
| Portage to Camden (Arkansas) | 715.15 mi (1,150.92 km) |
| Portage to Camden (New Jersey) | 567.62 mi (913.50 km) |
| Portage to Cameron Park (California) | 1,863.79 mi (2,999.49 km) |
| Portage to Camp Pendleton South (California) | 1,832.60 mi (2,949.28 km) |
| Portage to Camp Springs (Maryland) | 512.02 mi (824.02 km) |
| Portage to Camp Verde (Arizona) | 1,509.68 mi (2,429.59 km) |
| Portage to Campbell (California) | 1,946.49 mi (3,132.57 km) |
| Portage to Campbellsville (Kentucky) | 335.72 mi (540.29 km) |
| Portage to Campton Hills (Illinois) | 145.95 mi (234.89 km) |
| Portage to Canby (Oregon) | 1,847.61 mi (2,973.44 km) |
| Portage to Candelaria (Puerto Rico) | 1,999.05 mi (3,217.16 km) |
