| Letchworth to Srbobran | 1,010.08 mi (1,625.57 km) |
| Letchworth to Sremska Kamenica | 1,024.37 mi (1,648.56 km) |
| Letchworth to Sremska Mitrovica | 1,025.16 mi (1,649.84 km) |
| Letchworth to Sremski Karlovci | 1,028.95 mi (1,655.94 km) |
| Letchworth to Stara Pazova | 1,046.82 mi (1,684.69 km) |
| Letchworth to Subotica | 984.26 mi (1,584.02 km) |
| Letchworth to Surcin | 1,058.76 mi (1,703.91 km) |
| Letchworth to Surdulica | 1,221.76 mi (1,966.24 km) |
| Letchworth to Svilajnac | 1,118.96 mi (1,800.79 km) |
| Letchworth to Svrljig | 1,188.70 mi (1,913.04 km) |
| Letchworth to Temerin | 1,018.57 mi (1,639.23 km) |
| Letchworth to Titel | 1,043.55 mi (1,679.42 km) |
| Letchworth to Topola | 1,096.61 mi (1,764.82 km) |
| Letchworth to Trgoviste | 1,234.04 mi (1,985.99 km) |
| Letchworth to Trstenik | 1,135.84 mi (1,827.96 km) |
