| Porsgrunn to Somersworth (New Hampshire) | 3,421.65 mi (5,506.62 km) |
| Porsgrunn to Somerton (Arizona) | 5,348.34 mi (8,607.32 km) |
| Porsgrunn to Somerville (Massachusetts) | 3,473.55 mi (5,590.14 km) |
| Porsgrunn to Somerville (New Jersey) | 3,687.00 mi (5,933.66 km) |
| Porsgrunn to Sonoma (California) | 5,171.77 mi (8,323.17 km) |
| Porsgrunn to Soquel (California) | 5,242.77 mi (8,437.42 km) |
| Porsgrunn to South Bend (Indiana) | 4,003.75 mi (6,443.41 km) |
| Porsgrunn to South Bradenton (Florida) | 4,685.80 mi (7,541.07 km) |
| Porsgrunn to South Burlington (Vermont) | 3,436.95 mi (5,531.23 km) |
| Porsgrunn to South Charleston (West Virginia) | 4,042.50 mi (6,505.77 km) |
| Porsgrunn to South Daytona (Florida) | 4,534.55 mi (7,297.65 km) |
| Porsgrunn to South El Monte (California) | 5,339.94 mi (8,593.80 km) |
| Porsgrunn to South Elgin (Illinois) | 4,049.40 mi (6,516.88 km) |
| Porsgrunn to South Euclid (Ohio) | 3,862.25 mi (6,215.69 km) |
| Porsgrunn to South Farmingdale (New York) | 3,640.23 mi (5,858.39 km) |
