| Porsgrunn to Crest Hill (Illinois) | 4,066.47 mi (6,544.36 km) |
| Porsgrunn to Crestview (Florida) | 4,630.49 mi (7,452.05 km) |
| Porsgrunn to Crestwood (Illinois) | 4,050.95 mi (6,519.38 km) |
| Porsgrunn to Crestwood (Missouri) | 4,305.59 mi (6,929.19 km) |
| Porsgrunn to Creve Coeur (Missouri) | 4,301.63 mi (6,922.80 km) |
| Porsgrunn to Crofton (Maryland) | 3,839.67 mi (6,179.36 km) |
| Porsgrunn to Crossville (Tennessee) | 4,283.51 mi (6,893.65 km) |
| Porsgrunn to Crowley (Louisiana) | 4,849.02 mi (7,803.74 km) |
| Porsgrunn to Crowley (Texas) | 4,865.47 mi (7,830.22 km) |
| Porsgrunn to Crown Point (Indiana) | 4,051.62 mi (6,520.45 km) |
| Porsgrunn to Crystal (Minnesota) | 4,029.33 mi (6,484.58 km) |
| Porsgrunn to Crystal Lake (Illinois) | 4,036.60 mi (6,496.28 km) |
| Porsgrunn to Cudahy (California) | 5,348.56 mi (8,607.67 km) |
| Porsgrunn to Cudahy (Wisconsin) | 3,982.78 mi (6,409.67 km) |
| Porsgrunn to Cullman (Alabama) | 4,442.71 mi (7,149.84 km) |
