| Portsmouth to Srbobran | 1,024.12 mi (1,648.16 km) |
| Portsmouth to Sremska Kamenica | 1,036.92 mi (1,668.77 km) |
| Portsmouth to Sremska Mitrovica | 1,035.94 mi (1,667.19 km) |
| Portsmouth to Sremski Karlovci | 1,041.61 mi (1,676.31 km) |
| Portsmouth to Stara Pazova | 1,058.91 mi (1,704.16 km) |
| Portsmouth to Subotica | 1,001.05 mi (1,611.03 km) |
| Portsmouth to Surcin | 1,070.21 mi (1,722.34 km) |
| Portsmouth to Surdulica | 1,228.11 mi (1,976.46 km) |
| Portsmouth to Svilajnac | 1,129.69 mi (1,818.07 km) |
| Portsmouth to Svrljig | 1,197.93 mi (1,927.89 km) |
| Portsmouth to Temerin | 1,032.22 mi (1,661.20 km) |
| Portsmouth to Titel | 1,057.03 mi (1,701.13 km) |
| Portsmouth to Topola | 1,106.34 mi (1,780.48 km) |
| Portsmouth to Trgoviste | 1,238.84 mi (1,993.72 km) |
| Portsmouth to Trstenik | 1,143.43 mi (1,840.17 km) |
