| Porsgrunn to North Tustin (California) | 5,351.82 mi (8,612.93 km) |
| Porsgrunn to North Valley (New Mexico) | 4,977.90 mi (8,011.16 km) |
| Porsgrunn to North Valley Stream (New York) | 3,650.75 mi (5,875.31 km) |
| Porsgrunn to North Wantagh (New York) | 3,643.31 mi (5,863.34 km) |
| Porsgrunn to Northampton (Massachusetts) | 3,529.62 mi (5,680.37 km) |
| Porsgrunn to Northampton (Pennsylvania) | 3,710.13 mi (5,970.88 km) |
| Porsgrunn to Northbrook (Illinois) | 4,027.07 mi (6,480.95 km) |
| Porsgrunn to Northbrook (Ohio) | 4,084.90 mi (6,574.01 km) |
| Porsgrunn to Northdale (Florida) | 4,646.86 mi (7,478.39 km) |
| Porsgrunn to Northfield (Minnesota) | 4,056.47 mi (6,528.25 km) |
| Porsgrunn to Northglenn (Colorado) | 4,648.87 mi (7,481.63 km) |
| Porsgrunn to Northlake (Illinois) | 4,041.14 mi (6,503.59 km) |
| Porsgrunn to Northport (Alabama) | 4,519.72 mi (7,273.79 km) |
| Porsgrunn to Northview (Michigan) | 3,908.06 mi (6,289.41 km) |
| Porsgrunn to Norton (Ohio) | 3,893.01 mi (6,265.20 km) |
