| Difficult Run to Srbobran | 4,673.15 mi (7,520.72 km) |
| Difficult Run to Sremska Kamenica | 4,687.33 mi (7,543.53 km) |
| Difficult Run to Sremska Mitrovica | 4,687.66 mi (7,544.07 km) |
| Difficult Run to Sremski Karlovci | 4,691.93 mi (7,550.93 km) |
| Difficult Run to Stara Pazova | 4,709.71 mi (7,579.54 km) |
| Difficult Run to Subotica | 4,646.93 mi (7,478.52 km) |
| Difficult Run to Surcin | 4,721.50 mi (7,598.52 km) |
| Difficult Run to Surdulica | 4,881.64 mi (7,856.25 km) |
| Difficult Run to Svilajnac | 4,781.52 mi (7,695.11 km) |
| Difficult Run to Svrljig | 4,850.65 mi (7,806.36 km) |
| Difficult Run to Temerin | 4,681.64 mi (7,534.37 km) |
| Difficult Run to Titel | 4,706.61 mi (7,574.55 km) |
| Difficult Run to Topola | 4,758.73 mi (7,658.44 km) |
| Difficult Run to Trgoviste | 4,892.35 mi (7,873.48 km) |
| Difficult Run to Trstenik | 4,796.70 mi (7,719.54 km) |
