| Porsgrunn to Commerce City (Colorado) | 4,648.02 mi (7,480.27 km) |
| Porsgrunn to Compton (California) | 5,354.02 mi (8,616.47 km) |
| Porsgrunn to Comstock Park (Michigan) | 3,910.36 mi (6,293.11 km) |
| Porsgrunn to Concord (California) | 5,182.11 mi (8,339.80 km) |
| Porsgrunn to Concord (Missouri) | 4,307.51 mi (6,932.28 km) |
| Porsgrunn to Concord (New Hampshire) | 3,445.38 mi (5,544.80 km) |
| Porsgrunn to Concord (North Carolina) | 4,170.57 mi (6,711.89 km) |
| Porsgrunn to Conneaut (Ohio) | 3,809.74 mi (6,131.18 km) |
| Porsgrunn to Connersville (Indiana) | 4,079.94 mi (6,566.03 km) |
| Porsgrunn to Conroe (Texas) | 4,940.68 mi (7,951.26 km) |
| Porsgrunn to Converse (Texas) | 5,076.20 mi (8,169.35 km) |
| Porsgrunn to Conway (Arkansas) | 4,569.66 mi (7,354.15 km) |
| Porsgrunn to Conway (Florida) | 4,583.87 mi (7,377.03 km) |
| Porsgrunn to Conway (South Carolina) | 4,203.90 mi (6,765.52 km) |
| Porsgrunn to Conyers (Georgia) | 4,378.96 mi (7,047.26 km) |
