| Porsgrunn to San Luis Obispo (California) | 5,324.03 mi (8,568.20 km) |
| Porsgrunn to San Marcos (California) | 5,376.30 mi (8,652.31 km) |
| Porsgrunn to San Marcos (Texas) | 5,043.13 mi (8,116.14 km) |
| Porsgrunn to San Marino (California) | 5,336.89 mi (8,588.89 km) |
| Porsgrunn to San Mateo (California) | 5,215.47 mi (8,393.49 km) |
| Porsgrunn to San Pablo (California) | 5,190.05 mi (8,352.57 km) |
| Porsgrunn to San Rafael (California) | 5,192.14 mi (8,355.95 km) |
| Porsgrunn to San Ramon (California) | 5,194.01 mi (8,358.95 km) |
| Porsgrunn to San Tan Valley (Arizona) | 5,231.87 mi (8,419.88 km) |
| Porsgrunn to Sand Springs (Oklahoma) | 4,619.77 mi (7,434.80 km) |
| Porsgrunn to Sandusky (Ohio) | 3,904.08 mi (6,283.02 km) |
| Porsgrunn to Sandy (Oregon) | 4,718.11 mi (7,593.06 km) |
| Porsgrunn to Sandy (Utah) | 4,785.57 mi (7,701.63 km) |
| Porsgrunn to Sandy Springs (Georgia) | 4,375.85 mi (7,042.25 km) |
| Porsgrunn to Sanford (Florida) | 4,565.25 mi (7,347.06 km) |
