| Harrow to Rury | 981.55 mi (1,579.65 km) |
| Harrow to Rybnik | 828.72 mi (1,333.70 km) |
| Harrow to Ryki | 952.29 mi (1,532.57 km) |
| Harrow to Rypin | 839.49 mi (1,351.03 km) |
| Harrow to Rzeszow | 977.66 mi (1,573.39 km) |
| Harrow to Sandomierz | 956.38 mi (1,539.14 km) |
| Harrow to Sanok | 996.06 mi (1,603.00 km) |
| Harrow to Sedziszow Malopolski | 964.20 mi (1,551.73 km) |
| Harrow to Sepolno Krajenskie | 760.50 mi (1,223.91 km) |
| Harrow to Sidlice | 809.23 mi (1,302.33 km) |
| Harrow to Siechnice | 754.92 mi (1,214.93 km) |
| Harrow to Siedlce | 961.74 mi (1,547.77 km) |
| Harrow to Siemianowice Slaskie | 844.20 mi (1,358.62 km) |
| Harrow to Siemiatycze | 984.60 mi (1,584.57 km) |
| Harrow to Sieradz | 817.37 mi (1,315.44 km) |
