| Porsgrunn to Hutchinson (Minnesota) | 4,066.93 mi (6,545.09 km) |
| Porsgrunn to Hutto (Texas) | 4,991.63 mi (8,033.25 km) |
| Porsgrunn to Hyattsville (Maryland) | 3,851.71 mi (6,198.73 km) |
| Porsgrunn to Hybla Valley (Virginia) | 3,867.50 mi (6,224.14 km) |
| Porsgrunn to Idaho Falls (Idaho) | 4,612.35 mi (7,422.86 km) |
| Porsgrunn to Idylwood (Virginia) | 3,863.95 mi (6,218.42 km) |
| Porsgrunn to Ilchester (Maryland) | 3,831.56 mi (6,166.30 km) |
| Porsgrunn to Immokalee (Florida) | 4,705.96 mi (7,573.52 km) |
| Porsgrunn to Imperial (California) | 5,355.38 mi (8,618.65 km) |
| Porsgrunn to Imperial Beach (California) | 5,410.40 mi (8,707.20 km) |
| Porsgrunn to Independence (Kentucky) | 4,100.34 mi (6,598.86 km) |
| Porsgrunn to Independence (Missouri) | 4,395.79 mi (7,074.34 km) |
| Porsgrunn to Indian Trail (North Carolina) | 4,188.89 mi (6,741.37 km) |
| Porsgrunn to Indiana (Pennsylvania) | 3,834.40 mi (6,170.87 km) |
| Porsgrunn to Indianapolis (Indiana) | 4,105.10 mi (6,606.52 km) |
