| Harrow to Seysses | 563.95 mi (907.58 km) |
| Harrow to Sin-le-Noble | 172.50 mi (277.61 km) |
| Harrow to Six-Fours-les-Plages | 652.78 mi (1,050.55 km) |
| Harrow to Soissons | 221.71 mi (356.81 km) |
| Harrow to Soisy-sous-Montmorency | 214.01 mi (344.42 km) |
| Harrow to Sollies-Pont | 651.80 mi (1,048.97 km) |
| Harrow to Somain | 179.07 mi (288.18 km) |
| Harrow to Sorgues | 576.38 mi (927.59 km) |
| Harrow to Sotteville-les-Rouen | 162.95 mi (262.25 km) |
| Harrow to Soyaux | 411.39 mi (662.07 km) |
| Harrow to Stains | 218.24 mi (351.23 km) |
| Harrow to Stiring-Wendel | 360.10 mi (579.53 km) |
| Harrow to Strasbourg | 414.01 mi (666.29 km) |
| Harrow to Sucy-en-Brie | 232.16 mi (373.63 km) |
| Harrow to Suresnes | 219.11 mi (352.62 km) |
