| Porsgrunn to Jeffersonville (Indiana) | 4,171.33 mi (6,713.10 km) |
| Porsgrunn to Jenison (Michigan) | 3,922.48 mi (6,312.62 km) |
| Porsgrunn to Jenks (Oklahoma) | 4,623.12 mi (7,440.20 km) |
| Porsgrunn to Jennings (Missouri) | 4,292.66 mi (6,908.37 km) |
| Porsgrunn to Jensen Beach (Florida) | 4,618.43 mi (7,432.65 km) |
| Porsgrunn to Jericho (New York) | 3,639.68 mi (5,857.51 km) |
| Porsgrunn to Jerome (Idaho) | 4,717.66 mi (7,592.34 km) |
| Porsgrunn to Jersey City (New Jersey) | 3,661.01 mi (5,891.82 km) |
| Porsgrunn to Jessup (Maryland) | 3,835.64 mi (6,172.86 km) |
| Porsgrunn to Johns Creek (Georgia) | 4,364.87 mi (7,024.58 km) |
| Porsgrunn to Johnson City (New York) | 3,649.37 mi (5,873.10 km) |
| Porsgrunn to Johnson City (Tennessee) | 4,175.36 mi (6,719.59 km) |
| Porsgrunn to Johnston (Iowa) | 4,228.50 mi (6,805.12 km) |
| Porsgrunn to Johnstown (Colorado) | 4,621.90 mi (7,438.23 km) |
| Porsgrunn to Johnstown (Pennsylvania) | 3,842.70 mi (6,184.23 km) |
