| Porsgrunn to Ukiah (California) | 5,133.24 mi (8,261.15 km) |
| Porsgrunn to Union (Missouri) | 4,331.15 mi (6,970.32 km) |
| Porsgrunn to Union City (California) | 5,205.87 mi (8,378.04 km) |
| Porsgrunn to Union City (Georgia) | 4,401.59 mi (7,083.67 km) |
| Porsgrunn to Union City (New Jersey) | 3,657.18 mi (5,885.67 km) |
| Porsgrunn to Union City (Tennessee) | 4,385.14 mi (7,057.20 km) |
| Porsgrunn to Union Hill-Novelty Hill (Washington) | 4,570.01 mi (7,354.71 km) |
| Porsgrunn to Union Park (Florida) | 4,576.66 mi (7,365.42 km) |
| Porsgrunn to Uniondale (New York) | 3,645.17 mi (5,866.34 km) |
| Porsgrunn to Universal City (Texas) | 5,073.61 mi (8,165.19 km) |
| Porsgrunn to University (Florida) | 4,645.36 mi (7,475.98 km) |
| Porsgrunn to University City (Missouri) | 4,297.98 mi (6,916.93 km) |
| Porsgrunn to University Heights (Ohio) | 3,864.17 mi (6,218.78 km) |
| Porsgrunn to University of California-Santa Barbara (California) | 5,359.31 mi (8,624.98 km) |
| Porsgrunn to University Park (Texas) | 4,832.26 mi (7,776.78 km) |
