| Longford to Sremska Kamenica | 1,361.44 mi (2,191.02 km) |
| Longford to Sremska Mitrovica | 1,362.61 mi (2,192.92 km) |
| Longford to Sremski Karlovci | 1,365.99 mi (2,198.35 km) |
| Longford to Stara Pazova | 1,383.98 mi (2,227.30 km) |
| Longford to Subotica | 1,320.08 mi (2,124.47 km) |
| Longford to Surcin | 1,396.05 mi (2,246.72 km) |
| Longford to Surdulica | 1,559.67 mi (2,510.04 km) |
| Longford to Svilajnac | 1,456.35 mi (2,343.76 km) |
| Longford to Svrljig | 1,526.31 mi (2,456.36 km) |
| Longford to Temerin | 1,355.36 mi (2,181.24 km) |
| Longford to Titel | 1,380.35 mi (2,221.46 km) |
| Longford to Topola | 1,434.19 mi (2,308.10 km) |
| Longford to Trgoviste | 1,572.00 mi (2,529.88 km) |
| Longford to Trstenik | 1,473.67 mi (2,371.65 km) |
| Longford to Tutin | 1,475.07 mi (2,373.89 km) |
