| Harrow to Srbobran | 1,006.68 mi (1,620.09 km) |
| Harrow to Sremska Kamenica | 1,020.51 mi (1,642.34 km) |
| Harrow to Sremska Mitrovica | 1,020.75 mi (1,642.73 km) |
| Harrow to Sremski Karlovci | 1,025.13 mi (1,649.78 km) |
| Harrow to Stara Pazova | 1,042.83 mi (1,678.27 km) |
| Harrow to Subotica | 981.71 mi (1,579.90 km) |
| Harrow to Surcin | 1,054.58 mi (1,697.18 km) |
| Harrow to Surdulica | 1,216.11 mi (1,957.14 km) |
| Harrow to Svilajnac | 1,114.60 mi (1,793.77 km) |
| Harrow to Svrljig | 1,183.92 mi (1,905.34 km) |
| Harrow to Temerin | 1,015.05 mi (1,633.56 km) |
| Harrow to Titel | 1,039.99 mi (1,673.70 km) |
| Harrow to Topola | 1,091.92 mi (1,757.27 km) |
| Harrow to Trgoviste | 1,227.92 mi (1,976.14 km) |
| Harrow to Trstenik | 1,130.51 mi (1,819.39 km) |
