| Harrow on the Hill to Seysses | 562.62 mi (905.45 km) |
| Harrow on the Hill to Sin-le-Noble | 171.40 mi (275.84 km) |
| Harrow on the Hill to Six-Fours-les-Plages | 651.40 mi (1,048.33 km) |
| Harrow on the Hill to Soissons | 220.44 mi (354.77 km) |
| Harrow on the Hill to Soisy-sous-Montmorency | 212.64 mi (342.22 km) |
| Harrow on the Hill to Sollies-Pont | 650.42 mi (1,046.75 km) |
| Harrow on the Hill to Somain | 177.98 mi (286.43 km) |
| Harrow on the Hill to Sorgues | 574.99 mi (925.36 km) |
| Harrow on the Hill to Sotteville-les-Rouen | 161.57 mi (260.03 km) |
| Harrow on the Hill to Soyaux | 410.11 mi (660.00 km) |
| Harrow on the Hill to Stains | 216.88 mi (349.03 km) |
| Harrow on the Hill to Stiring-Wendel | 359.05 mi (577.83 km) |
| Harrow on the Hill to Strasbourg | 412.92 mi (664.54 km) |
| Harrow on the Hill to Sucy-en-Brie | 230.80 mi (371.43 km) |
| Harrow on the Hill to Suresnes | 217.74 mi (350.41 km) |
