| Portsmouth to Santa Rosa (California) | 5,330.57 mi (8,578.72 km) |
| Portsmouth to Santaquin (Utah) | 4,901.23 mi (7,887.77 km) |
| Portsmouth to Santee (California) | 5,467.31 mi (8,798.78 km) |
| Portsmouth to Sapulpa (Oklahoma) | 4,541.80 mi (7,309.33 km) |
| Portsmouth to Saraland (Alabama) | 4,477.75 mi (7,206.24 km) |
| Portsmouth to Sarasota (Florida) | 4,417.77 mi (7,109.72 km) |
| Portsmouth to Sarasota Springs (Florida) | 4,416.33 mi (7,107.40 km) |
| Portsmouth to Saratoga (California) | 5,377.80 mi (8,654.74 km) |
| Portsmouth to Saratoga Springs (New York) | 3,330.02 mi (5,359.14 km) |
| Portsmouth to Saratoga Springs (Utah) | 4,885.07 mi (7,861.76 km) |
| Portsmouth to Sartell (Minnesota) | 4,008.25 mi (6,450.65 km) |
| Portsmouth to Satellite Beach (Florida) | 4,293.31 mi (6,909.42 km) |
| Portsmouth to Sauk Rapids (Minnesota) | 4,006.80 mi (6,448.32 km) |
| Portsmouth to Sault Ste. Marie (Michigan) | 3,606.79 mi (5,804.57 km) |
| Portsmouth to Savage (Minnesota) | 4,017.12 mi (6,464.92 km) |
