| Harpenden to Stannington | 119.83 mi (192.85 km) |
| Harpenden to Stansted Mountfitchet | 24.14 mi (38.84 km) |
| Harpenden to Stanwell | 25.43 mi (40.92 km) |
| Harpenden to Stapleford | 86.07 mi (138.52 km) |
| Harpenden to Staveley | 108.69 mi (174.93 km) |
| Harpenden to Stepney | 24.67 mi (39.70 km) |
| Harpenden to Stevenage | 8.67 mi (13.95 km) |
| Harpenden to Stevenston | 319.80 mi (514.67 km) |
| Harpenden to Stirling | 330.74 mi (532.27 km) |
| Harpenden to Stockport | 133.27 mi (214.48 km) |
| Harpenden to Stocksbridge | 125.87 mi (202.58 km) |
| Harpenden to Stockton-on-Tees | 194.35 mi (312.77 km) |
| Harpenden to Stoke Gifford | 96.35 mi (155.06 km) |
| Harpenden to Stoke-on-Trent | 112.38 mi (180.86 km) |
| Harpenden to Stone | 106.52 mi (171.43 km) |
