| Porsgrunn to Portage (Michigan) | 3,953.85 mi (6,363.10 km) |
| Porsgrunn to Portage (Wisconsin) | 3,997.91 mi (6,434.01 km) |
| Porsgrunn to Portales (New Mexico) | 4,946.90 mi (7,961.27 km) |
| Porsgrunn to Porterville (California) | 5,236.34 mi (8,427.07 km) |
| Porsgrunn to Portland (Maine) | 3,379.29 mi (5,438.43 km) |
| Porsgrunn to Portland (Oregon) | 4,716.94 mi (7,591.18 km) |
| Porsgrunn to Portland (Tennessee) | 4,295.60 mi (6,913.09 km) |
| Porsgrunn to Portland (Texas) | 5,141.95 mi (8,275.17 km) |
| Porsgrunn to Portsmouth (New Hampshire) | 3,428.28 mi (5,517.28 km) |
| Porsgrunn to Portsmouth (Ohio) | 4,059.68 mi (6,533.43 km) |
| Porsgrunn to Portsmouth (Virginia) | 3,946.79 mi (6,351.75 km) |
| Porsgrunn to Post Falls (Idaho) | 4,463.82 mi (7,183.82 km) |
| Porsgrunn to Potomac (Maryland) | 3,856.82 mi (6,206.95 km) |
| Porsgrunn to Potomac Park (California) | 5,278.85 mi (8,495.48 km) |
| Porsgrunn to Pottstown (Pennsylvania) | 3,738.57 mi (6,016.64 km) |
