| Porsgrunn to Oxford (Alabama) | 4,444.20 mi (7,152.25 km) |
| Porsgrunn to Oxford (Mississippi) | 4,518.48 mi (7,271.79 km) |
| Porsgrunn to Oxford (Ohio) | 4,075.78 mi (6,559.33 km) |
| Porsgrunn to Oxnard (California) | 5,357.42 mi (8,621.94 km) |
| Porsgrunn to Oxon Hill (Maryland) | 3,861.68 mi (6,214.78 km) |
| Porsgrunn to Ozark (Alabama) | 4,559.46 mi (7,337.74 km) |
| Porsgrunn to Ozark (Missouri) | 4,479.51 mi (7,209.08 km) |
| Porsgrunn to Pace (Florida) | 4,657.24 mi (7,495.10 km) |
| Porsgrunn to Pacific Grove (California) | 5,266.33 mi (8,475.35 km) |
| Porsgrunn to Pacifica (California) | 5,215.29 mi (8,393.20 km) |
| Porsgrunn to Paducah (Kentucky) | 4,335.82 mi (6,977.83 km) |
| Porsgrunn to Pahrump (Nevada) | 5,154.76 mi (8,295.78 km) |
| Porsgrunn to Painesville (Ohio) | 3,842.73 mi (6,184.27 km) |
| Porsgrunn to Palatine (Illinois) | 4,034.06 mi (6,492.19 km) |
| Porsgrunn to Palatka (Florida) | 4,529.51 mi (7,289.54 km) |
