| Porsgrunn to Nocatee (Florida) | 4,495.39 mi (7,234.64 km) |
| Porsgrunn to Nogales (Arizona) | 5,327.10 mi (8,573.15 km) |
| Porsgrunn to Nolensville (Tennessee) | 4,336.22 mi (6,978.47 km) |
| Porsgrunn to Norco (California) | 5,335.81 mi (8,587.15 km) |
| Porsgrunn to Norcross (Georgia) | 4,370.40 mi (7,033.47 km) |
| Porsgrunn to Norfolk (Nebraska) | 4,315.86 mi (6,945.71 km) |
| Porsgrunn to Norfolk (Virginia) | 3,940.98 mi (6,342.39 km) |
| Porsgrunn to Normal (Illinois) | 4,152.01 mi (6,682.02 km) |
| Porsgrunn to Norman (Oklahoma) | 4,708.94 mi (7,578.31 km) |
| Porsgrunn to Norridge (Illinois) | 4,035.87 mi (6,495.11 km) |
| Porsgrunn to Norristown (Pennsylvania) | 3,735.28 mi (6,011.36 km) |
| Porsgrunn to North Adams (Massachusetts) | 3,525.66 mi (5,674.01 km) |
| Porsgrunn to North Amityville (New York) | 3,639.95 mi (5,857.93 km) |
| Porsgrunn to North Arlington (New Jersey) | 3,659.30 mi (5,889.08 km) |
| Porsgrunn to North Auburn (California) | 5,101.50 mi (8,210.07 km) |
