| Porsgrunn to Carlsbad (New Mexico) | 5,078.68 mi (8,173.34 km) |
| Porsgrunn to Carmel (Indiana) | 4,094.66 mi (6,589.72 km) |
| Porsgrunn to Carmichael (California) | 5,125.70 mi (8,249.02 km) |
| Porsgrunn to Carney (Maryland) | 3,813.34 mi (6,136.97 km) |
| Porsgrunn to Carnot-Moon (Pennsylvania) | 3,874.61 mi (6,235.59 km) |
| Porsgrunn to Carol Stream (Illinois) | 4,047.83 mi (6,514.35 km) |
| Porsgrunn to Carolina (Puerto Rico) | 4,626.55 mi (7,445.72 km) |
| Porsgrunn to Carolina Forest (South Carolina) | 4,203.70 mi (6,765.21 km) |
| Porsgrunn to Carpentersville (Illinois) | 4,041.34 mi (6,503.91 km) |
| Porsgrunn to Carpinteria (California) | 5,352.52 mi (8,614.04 km) |
| Porsgrunn to Carrboro (North Carolina) | 4,089.31 mi (6,581.11 km) |
| Porsgrunn to Carroll (Iowa) | 4,240.29 mi (6,824.09 km) |
| Porsgrunn to Carrollton (Georgia) | 4,419.38 mi (7,112.31 km) |
| Porsgrunn to Carrollton (Texas) | 4,827.35 mi (7,768.86 km) |
| Porsgrunn to Carrollwood (Florida) | 4,649.23 mi (7,482.21 km) |
