| Harpenden to Sonneberg | 509.57 mi (820.07 km) |
| Harpenden to Sonsbeck | 288.34 mi (464.04 km) |
| Harpenden to Sonthofen | 559.94 mi (901.14 km) |
| Harpenden to Spaichingen | 479.25 mi (771.28 km) |
| Harpenden to Spelle | 333.92 mi (537.39 km) |
| Harpenden to Spenge | 376.46 mi (605.85 km) |
| Harpenden to Speyer | 421.99 mi (679.12 km) |
| Harpenden to Spiesen-Elversberg | 370.93 mi (596.96 km) |
| Harpenden to Spremberg | 630.08 mi (1,014.02 km) |
| Harpenden to Springe | 421.64 mi (678.56 km) |
| Harpenden to Sprockhovel | 327.66 mi (527.32 km) |
| Harpenden to Stade | 429.09 mi (690.56 km) |
| Harpenden to Stadtallendorf | 409.90 mi (659.67 km) |
| Harpenden to Stadthagen | 407.20 mi (655.32 km) |
| Harpenden to Stadtlohn | 309.90 mi (498.74 km) |
