| Portsmouth to Stonehaven | 427.93 mi (688.69 km) |
| Portsmouth to Stourbridge | 122.85 mi (197.71 km) |
| Portsmouth to Stowmarket | 131.16 mi (211.09 km) |
| Portsmouth to Stranraer | 327.17 mi (526.53 km) |
| Portsmouth to Stratford | 69.26 mi (111.46 km) |
| Portsmouth to Stratford-upon-Avon | 99.46 mi (160.07 km) |
| Portsmouth to Stratton Saint Margaret | 61.31 mi (98.68 km) |
| Portsmouth to Streatham | 59.95 mi (96.49 km) |
| Portsmouth to Street | 75.12 mi (120.89 km) |
| Portsmouth to Streetly | 127.05 mi (204.46 km) |
| Portsmouth to Stretford | 189.67 mi (305.24 km) |
| Portsmouth to Strood | 79.11 mi (127.31 km) |
| Portsmouth to Stroud | 81.11 mi (130.53 km) |
| Portsmouth to Sudbury | 61.44 mi (98.88 km) |
| Portsmouth to Sudbury | 115.79 mi (186.35 km) |
