| Round Rock to Srbobran | 5,884.00 mi (9,469.38 km) |
| Round Rock to Sremska Kamenica | 5,899.95 mi (9,495.05 km) |
| Round Rock to Sremska Mitrovica | 5,902.57 mi (9,499.26 km) |
| Round Rock to Sremski Karlovci | 5,904.37 mi (9,502.17 km) |
| Round Rock to Stara Pazova | 5,922.72 mi (9,531.70 km) |
| Round Rock to Subotica | 5,854.55 mi (9,421.98 km) |
| Round Rock to Surcin | 5,935.26 mi (9,551.88 km) |
| Round Rock to Surdulica | 6,101.60 mi (9,819.57 km) |
| Round Rock to Svilajnac | 5,995.78 mi (9,649.28 km) |
| Round Rock to Svrljig | 6,066.59 mi (9,763.23 km) |
| Round Rock to Temerin | 5,892.89 mi (9,483.68 km) |
| Round Rock to Titel | 5,917.81 mi (9,523.79 km) |
| Round Rock to Topola | 5,974.52 mi (9,615.06 km) |
| Round Rock to Trgoviste | 6,114.50 mi (9,840.33 km) |
| Round Rock to Trstenik | 6,015.19 mi (9,680.51 km) |
