| Porsgrunn to University Place (Washington) | 4,609.23 mi (7,417.84 km) |
| Porsgrunn to Upland (California) | 5,326.37 mi (8,571.97 km) |
| Porsgrunn to Upper Arlington (Ohio) | 3,993.53 mi (6,426.97 km) |
| Porsgrunn to Upper Grand Lagoon (Florida) | 4,636.10 mi (7,461.08 km) |
| Porsgrunn to Upper Montclair (New Jersey) | 3,658.79 mi (5,888.25 km) |
| Porsgrunn to Urbana (Illinois) | 4,150.60 mi (6,679.75 km) |
| Porsgrunn to Urbana (Maryland) | 3,844.75 mi (6,187.54 km) |
| Porsgrunn to Urbana (Ohio) | 4,010.93 mi (6,454.97 km) |
| Porsgrunn to Urbandale (Iowa) | 4,233.16 mi (6,812.61 km) |
| Porsgrunn to Utica (New York) | 3,573.88 mi (5,751.60 km) |
| Porsgrunn to Uvalde (Texas) | 5,138.49 mi (8,269.59 km) |
| Porsgrunn to Vacaville (California) | 5,156.86 mi (8,299.17 km) |
| Porsgrunn to Vadnais Heights (Minnesota) | 4,020.07 mi (6,469.67 km) |
| Porsgrunn to Vail (Arizona) | 5,280.12 mi (8,497.53 km) |
| Porsgrunn to Valdosta (Georgia) | 4,515.11 mi (7,266.37 km) |
