| Harrow to Sosnowiec | 850.41 mi (1,368.61 km) |
| Harrow to Srem | 740.26 mi (1,191.33 km) |
| Harrow to Sroda Slaska | 729.28 mi (1,173.66 km) |
| Harrow to Sroda Wielkopolska | 750.94 mi (1,208.53 km) |
| Harrow to Stalowa Wola | 970.97 mi (1,562.62 km) |
| Harrow to Starachowice | 922.13 mi (1,484.03 km) |
| Harrow to Stargard Szczecinski | 658.02 mi (1,058.99 km) |
| Harrow to Starogard Gdanski | 803.55 mi (1,293.20 km) |
| Harrow to Stary Sacz | 927.96 mi (1,493.42 km) |
| Harrow to Staszow | 933.20 mi (1,501.85 km) |
| Harrow to Strzegom | 721.18 mi (1,160.64 km) |
| Harrow to Strzelce Krajenskie | 676.45 mi (1,088.64 km) |
| Harrow to Strzelce Opolskie | 810.56 mi (1,304.47 km) |
| Harrow to Strzelin | 754.38 mi (1,214.06 km) |
| Harrow to Strzyzow | 971.07 mi (1,562.79 km) |
