| Portchester to Shotley Bridge | 280.01 mi (450.63 km) |
| Portchester to Shrewsbury | 146.63 mi (235.97 km) |
| Portchester to Sidcup | 66.62 mi (107.22 km) |
| Portchester to Sidmouth | 93.28 mi (150.12 km) |
| Portchester to Sileby | 130.52 mi (210.05 km) |
| Portchester to Sittingbourne | 87.74 mi (141.21 km) |
| Portchester to Skegness | 170.76 mi (274.81 km) |
| Portchester to Skelmersdale | 199.80 mi (321.55 km) |
| Portchester to Skipton | 218.89 mi (352.26 km) |
| Portchester to Sleaford | 151.84 mi (244.37 km) |
| Portchester to Slough | 51.49 mi (82.86 km) |
| Portchester to Small Heath | 116.33 mi (187.22 km) |
| Portchester to Smethwick | 119.73 mi (192.69 km) |
| Portchester to Snaresbrook | 71.14 mi (114.49 km) |
| Portchester to Snodland | 75.84 mi (122.05 km) |
