| Harpenden to Seysses | 579.97 mi (933.37 km) |
| Harpenden to Sin-le-Noble | 180.85 mi (291.04 km) |
| Harpenden to Six-Fours-les-Plages | 667.14 mi (1,073.66 km) |
| Harpenden to Soissons | 233.00 mi (374.97 km) |
| Harpenden to Soisy-sous-Montmorency | 227.71 mi (366.46 km) |
| Harpenden to Sollies-Pont | 666.01 mi (1,071.84 km) |
| Harpenden to Somain | 187.14 mi (301.17 km) |
| Harpenden to Sorgues | 590.96 mi (951.05 km) |
| Harpenden to Sotteville-les-Rouen | 178.00 mi (286.46 km) |
| Harpenden to Soyaux | 427.54 mi (688.05 km) |
| Harpenden to Stains | 231.87 mi (373.15 km) |
| Harpenden to Stiring-Wendel | 367.29 mi (591.10 km) |
| Harpenden to Strasbourg | 421.79 mi (678.80 km) |
| Harpenden to Sucy-en-Brie | 245.82 mi (395.62 km) |
| Harpenden to Suresnes | 233.07 mi (375.10 km) |
