| Porsgrunn to Fort Meade (Maryland) | 3,836.83 mi (6,174.79 km) |
| Porsgrunn to Fort Mill (South Carolina) | 4,202.24 mi (6,762.84 km) |
| Porsgrunn to Fort Mohave (Arizona) | 5,196.03 mi (8,362.20 km) |
| Porsgrunn to Fort Morgan (Colorado) | 4,596.49 mi (7,397.33 km) |
| Porsgrunn to Fort Myers (Florida) | 4,708.64 mi (7,577.82 km) |
| Porsgrunn to Fort Oglethorpe (Georgia) | 4,348.15 mi (6,997.68 km) |
| Porsgrunn to Fort Payne (Alabama) | 4,389.77 mi (7,064.65 km) |
| Porsgrunn to Fort Pierce (Florida) | 4,611.47 mi (7,421.44 km) |
| Porsgrunn to Fort Smith (Arkansas) | 4,612.27 mi (7,422.74 km) |
| Porsgrunn to Fort Thomas (Kentucky) | 4,090.06 mi (6,582.32 km) |
| Porsgrunn to Fort Walton Beach (Florida) | 4,650.47 mi (7,484.20 km) |
| Porsgrunn to Fort Washington (Maryland) | 3,865.78 mi (6,221.37 km) |
| Porsgrunn to Fort Wayne (Indiana) | 4,000.95 mi (6,438.91 km) |
| Porsgrunn to Fort Worth (Texas) | 4,853.13 mi (7,810.36 km) |
| Porsgrunn to Fortuna (California) | 5,060.76 mi (8,144.51 km) |
