| Welwyn Garden City to Srbobran | 1,004.94 mi (1,617.29 km) |
| Welwyn Garden City to Sremska Kamenica | 1,019.04 mi (1,639.99 km) |
| Welwyn Garden City to Sremska Mitrovica | 1,019.62 mi (1,640.92 km) |
| Welwyn Garden City to Sremski Karlovci | 1,023.64 mi (1,647.39 km) |
| Welwyn Garden City to Stara Pazova | 1,041.45 mi (1,676.05 km) |
| Welwyn Garden City to Subotica | 979.45 mi (1,576.27 km) |
| Welwyn Garden City to Surcin | 1,053.31 mi (1,695.14 km) |
| Welwyn Garden City to Surdulica | 1,215.76 mi (1,956.57 km) |
| Welwyn Garden City to Svilajnac | 1,113.45 mi (1,791.92 km) |
| Welwyn Garden City to Svrljig | 1,183.03 mi (1,903.91 km) |
| Welwyn Garden City to Temerin | 1,013.38 mi (1,630.87 km) |
| Welwyn Garden City to Titel | 1,038.34 mi (1,671.05 km) |
| Welwyn Garden City to Topola | 1,090.97 mi (1,755.74 km) |
| Welwyn Garden City to Trgoviste | 1,227.86 mi (1,976.05 km) |
| Welwyn Garden City to Trstenik | 1,129.96 mi (1,818.49 km) |
