| Harpenden to Solofra | 1,045.74 mi (1,682.96 km) |
| Harpenden to Somma Lombardo | 590.51 mi (950.34 km) |
| Harpenden to Somma Vesuviana | 1,030.29 mi (1,658.09 km) |
| Harpenden to Sommacampagna | 675.81 mi (1,087.61 km) |
| Harpenden to Sona | 673.61 mi (1,084.07 km) |
| Harpenden to Sondrio | 604.86 mi (973.43 km) |
| Harpenden to Sora | 958.12 mi (1,541.95 km) |
| Harpenden to Sorbolo | 690.14 mi (1,110.67 km) |
| Harpenden to Soresina | 648.22 mi (1,043.20 km) |
| Harpenden to Sorisole | 618.78 mi (995.84 km) |
| Harpenden to Sorrento | 1,041.69 mi (1,676.43 km) |
| Harpenden to Sorso | 871.04 mi (1,401.80 km) |
| Harpenden to Sortino | 1,259.28 mi (2,026.62 km) |
| Harpenden to Soverato Marina | 1,218.60 mi (1,961.15 km) |
| Harpenden to Sovicille | 797.86 mi (1,284.04 km) |
