| Porsgrunn to Caño Martin Peña (Puerto Rico) | 4,627.61 mi (7,447.41 km) |
| Porsgrunn to Cañon City (Colorado) | 4,743.05 mi (7,633.20 km) |
| Porsgrunn to Canóvanas (Puerto Rico) | 4,625.88 mi (7,444.63 km) |
| Porsgrunn to Canton (Georgia) | 4,362.22 mi (7,020.31 km) |
| Porsgrunn to Canton (Illinois) | 4,181.92 mi (6,730.14 km) |
| Porsgrunn to Canton (Mississippi) | 4,635.96 mi (7,460.86 km) |
| Porsgrunn to Canton (Ohio) | 3,896.11 mi (6,270.18 km) |
| Porsgrunn to Canyon (Texas) | 4,857.10 mi (7,816.74 km) |
| Porsgrunn to Canyon Lake (California) | 5,343.72 mi (8,599.89 km) |
| Porsgrunn to Canyon Lake (Texas) | 5,052.94 mi (8,131.91 km) |
| Porsgrunn to Cape Coral (Florida) | 4,712.85 mi (7,584.61 km) |
| Porsgrunn to Cape Girardeau (Missouri) | 4,350.93 mi (7,002.15 km) |
| Porsgrunn to Carbondale (Illinois) | 4,317.09 mi (6,947.69 km) |
| Porsgrunn to Carlisle (Pennsylvania) | 3,793.03 mi (6,104.29 km) |
| Porsgrunn to Carlsbad (California) | 5,379.60 mi (8,657.62 km) |
