| Portage to Clarksdale (Mississippi) | 615.44 mi (990.46 km) |
| Portage to Clarkston (Georgia) | 584.20 mi (940.17 km) |
| Portage to Clarksville (Indiana) | 268.11 mi (431.47 km) |
| Portage to Clarksville (Tennessee) | 400.10 mi (643.90 km) |
| Portage to Clawson (Michigan) | 126.72 mi (203.93 km) |
| Portage to Clay (Alabama) | 590.23 mi (949.89 km) |
| Portage to Clayton (California) | 1,928.97 mi (3,104.38 km) |
| Portage to Clayton (Missouri) | 349.90 mi (563.11 km) |
| Portage to Clayton (North Carolina) | 592.46 mi (953.48 km) |
| Portage to Clayton (Ohio) | 173.96 mi (279.96 km) |
| Portage to Clearfield (Utah) | 1,361.29 mi (2,190.79 km) |
| Portage to Clearlake (California) | 1,941.34 mi (3,124.29 km) |
| Portage to Clearwater (Florida) | 995.34 mi (1,601.84 km) |
| Portage to Cleburne (Texas) | 939.01 mi (1,511.19 km) |
| Portage to Clemmons (North Carolina) | 509.14 mi (819.38 km) |
