| Portage to Clemson (South Carolina) | 540.56 mi (869.95 km) |
| Portage to Clermont (Florida) | 968.88 mi (1,559.26 km) |
| Portage to Cleveland (Mississippi) | 647.49 mi (1,042.03 km) |
| Portage to Cleveland (Ohio) | 207.37 mi (333.74 km) |
| Portage to Cleveland (Tennessee) | 486.46 mi (782.89 km) |
| Portage to Cleveland Heights (Ohio) | 212.61 mi (342.16 km) |
| Portage to Cliffside Park (New Jersey) | 607.32 mi (977.39 km) |
| Portage to Clifton (Colorado) | 1,214.53 mi (1,954.59 km) |
| Portage to Clifton (New Jersey) | 598.05 mi (962.47 km) |
| Portage to Clinton (Iowa) | 239.95 mi (386.16 km) |
| Portage to Clinton (Maryland) | 514.58 mi (828.13 km) |
| Portage to Clinton (Mississippi) | 728.36 mi (1,172.19 km) |
| Portage to Clinton (Utah) | 1,362.90 mi (2,193.38 km) |
| Portage to Clive (Iowa) | 423.80 mi (682.04 km) |
| Portage to Cloquet (Minnesota) | 461.69 mi (743.02 km) |
